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Merge commit '33d18982fa03feb061c8f744a4f0a9175c1f63ab' 

* commit '33d18982fa03feb061c8f744a4f0a9175c1f63ab':
  lavc: add a new bitstream filtering API

Conversions-by: Hendrik Leppkes <h.leppkes@gmail.com>
Conversions-by: Derek Buitenguis <derek.buitenhuis@gmail.com>
Merged-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
tags/n3.1
Derek Buitenhuis 9 years ago
parent
6d160afab2 33d18982fa
commit
af9cac1be1
26 changed files with 1591 additions and 653 deletions
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  1. +1
    -1
      configure
  2. +4
    -0
      doc/APIchanges
  3. +2
    -0
      libavcodec/Makefile
  4. +66
    -34
      libavcodec/aac_adtstoasc_bsf.c
  5. +0
    -25
      libavcodec/allcodecs.c
  6. +190
    -7
      libavcodec/avcodec.h
  7. +119
    -36
      libavcodec/bitstream_filter.c
  8. +137
    -0
      libavcodec/bitstream_filters.c
  9. +219
    -0
      libavcodec/bsf.c
  10. +33
    -0
      libavcodec/bsf.h
  11. +14
    -10
      libavcodec/chomp_bsf.c
  12. +21
    -15
      libavcodec/dca_core_bsf.c
  13. +70
    -23
      libavcodec/dump_extradata_bsf.c
  14. +109
    -113
      libavcodec/h264_mp4toannexb_bsf.c
  15. +67
    -84
      libavcodec/hevc_mp4toannexb_bsf.c
  16. +39
    -23
      libavcodec/imx_dump_header_bsf.c
  17. +47
    -28
      libavcodec/mjpeg2jpeg_bsf.c
  18. +59
    -46
      libavcodec/mjpega_dump_header_bsf.c
  19. +63
    -23
      libavcodec/movsub_bsf.c
  20. +50
    -23
      libavcodec/mp3_header_decompress_bsf.c
  21. +64
    -67
      libavcodec/mpeg4_unpack_bframes_bsf.c
  22. +53
    -17
      libavcodec/noise_bsf.c
  23. +85
    -24
      libavcodec/remove_extradata_bsf.c
  24. +5
    -2
      libavcodec/version.h
  25. +68
    -52
      libavcodec/vp9_superframe_bsf.c
  26. +6
    -0
      libavformat/mux.c

+ 1
- 1
configure View File

@@ -3204,7 +3204,6 @@ ENCODER_LIST=$(find_things encoder ENC libavcodec/allcodecs.c)
DECODER_LIST=$(find_things decoder DEC libavcodec/allcodecs.c)
HWACCEL_LIST=$(find_things hwaccel HWACCEL libavcodec/allcodecs.c)
PARSER_LIST=$(find_things parser PARSER libavcodec/allcodecs.c)
BSF_LIST=$(find_things bsf BSF libavcodec/allcodecs.c)
MUXER_LIST=$(find_things muxer _MUX libavformat/allformats.c)
DEMUXER_LIST=$(find_things demuxer DEMUX libavformat/allformats.c)
OUTDEV_LIST=$(find_things outdev OUTDEV libavdevice/alldevices.c)
@@ -3218,6 +3217,7 @@ find_things_extern(){
sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
}

BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)

ALL_COMPONENTS="


+ 4
- 0
doc/APIchanges View File

@@ -15,6 +15,10 @@ libavutil: 2015-08-28

API changes, most recent first:

2016-xx-xx - xxxxxxx - lavc 57.15.0 - avcodec.h
Add a new bitstream filtering API working with AVPackets.
Deprecate the old bistream filtering API.

2016-xx-xx - xxxxxxx - lavfi 6.42.0 - avfilter.h
Add AVFilterContext.hw_device_ctx.



+ 2
- 0
libavcodec/Makefile View File

@@ -26,6 +26,8 @@ OBJS = allcodecs.o \
avpicture.o \
bitstream.o \
bitstream_filter.o \
bitstream_filters.o \
bsf.o \
codec_desc.o \
d3d11va.o \
dirac.o \


+ 66
- 34
libavcodec/aac_adtstoasc_bsf.c View File

@@ -21,6 +21,7 @@

#include "avcodec.h"
#include "aacadtsdec.h"
#include "bsf.h"
#include "put_bits.h"
#include "get_bits.h"
#include "mpeg4audio.h"
@@ -34,68 +35,75 @@ typedef struct AACBSFContext {
* This filter creates an MPEG-4 AudioSpecificConfig from an MPEG-2/4
* ADTS header and removes the ADTS header.
*/
static int aac_adtstoasc_filter(AVBitStreamFilterContext *bsfc,
AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size,
int keyframe)
static int aac_adtstoasc_filter(AVBSFContext *bsfc, AVPacket *out)
{
AACBSFContext *ctx = bsfc->priv_data;

GetBitContext gb;
PutBitContext pb;
AACADTSHeaderInfo hdr;
AVPacket *in;
int ret;

AACBSFContext *ctx = bsfc->priv_data;
ret = ff_bsf_get_packet(bsfc, &in);
if (ret < 0)
return ret;

init_get_bits(&gb, buf, AAC_ADTS_HEADER_SIZE*8);
if (in->size < AAC_ADTS_HEADER_SIZE)
goto packet_too_small;

*poutbuf = (uint8_t*) buf;
*poutbuf_size = buf_size;
init_get_bits(&gb, in->data, AAC_ADTS_HEADER_SIZE * 8);

if (avctx->extradata)
if (show_bits(&gb, 12) != 0xfff)
return 0;
if (bsfc->par_in->extradata && show_bits(&gb, 12) != 0xfff)
goto finish;

if (avpriv_aac_parse_header(&gb, &hdr) < 0) {
av_log(avctx, AV_LOG_ERROR, "Error parsing ADTS frame header!\n");
return AVERROR_INVALIDDATA;
av_log(bsfc, AV_LOG_ERROR, "Error parsing ADTS frame header!\n");
ret = AVERROR_INVALIDDATA;
goto fail;
}

if (!hdr.crc_absent && hdr.num_aac_frames > 1) {
avpriv_report_missing_feature(avctx,
avpriv_report_missing_feature(bsfc,
"Multiple RDBs per frame with CRC");
return AVERROR_PATCHWELCOME;
ret = AVERROR_PATCHWELCOME;
goto fail;
}

buf += AAC_ADTS_HEADER_SIZE + 2*!hdr.crc_absent;
buf_size -= AAC_ADTS_HEADER_SIZE + 2*!hdr.crc_absent;
in->size -= AAC_ADTS_HEADER_SIZE + 2 * !hdr.crc_absent;
if (in->size <= 0)
goto packet_too_small;
in->data += AAC_ADTS_HEADER_SIZE + 2 * !hdr.crc_absent;

if (!ctx->first_frame_done) {
int pce_size = 0;
uint8_t pce_data[MAX_PCE_SIZE];
uint8_t *extradata;

if (!hdr.chan_config) {
init_get_bits(&gb, buf, buf_size * 8);
init_get_bits(&gb, in->data, in->size * 8);
if (get_bits(&gb, 3) != 5) {
avpriv_report_missing_feature(avctx,
avpriv_report_missing_feature(bsfc,
"PCE-based channel configuration "
"without PCE as first syntax "
"element");
return AVERROR_PATCHWELCOME;
ret = AVERROR_PATCHWELCOME;
goto fail;
}
init_put_bits(&pb, pce_data, MAX_PCE_SIZE);
pce_size = avpriv_copy_pce_data(&pb, &gb)/8;
flush_put_bits(&pb);
buf_size -= get_bits_count(&gb)/8;
buf += get_bits_count(&gb)/8;
in->size -= get_bits_count(&gb)/8;
in->data += get_bits_count(&gb)/8;
}
av_free(avctx->extradata);
avctx->extradata_size = 2 + pce_size;
avctx->extradata = av_mallocz(avctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!avctx->extradata) {
avctx->extradata_size = 0;
return AVERROR(ENOMEM);

extradata = av_mallocz(2 + pce_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!extradata) {
ret = AVERROR(ENOMEM);
goto fail;
}

init_put_bits(&pb, avctx->extradata, avctx->extradata_size);
init_put_bits(&pb, extradata, 2 + pce_size);
put_bits(&pb, 5, hdr.object_type);
put_bits(&pb, 4, hdr.sampling_index);
put_bits(&pb, 4, hdr.chan_config);
@@ -104,20 +112,44 @@ static int aac_adtstoasc_filter(AVBitStreamFilterContext *bsfc,
put_bits(&pb, 1, 0); //is not extension
flush_put_bits(&pb);
if (pce_size) {
memcpy(avctx->extradata + 2, pce_data, pce_size);
memcpy(extradata + 2, pce_data, pce_size);
}

bsfc->par_out->extradata = extradata;
bsfc->par_out->extradata_size = 2 + pce_size;
ctx->first_frame_done = 1;
}

*poutbuf = (uint8_t*) buf;
*poutbuf_size = buf_size;
finish:
av_packet_move_ref(out, in);
av_packet_free(&in);

return 0;

packet_too_small:
av_log(bsfc, AV_LOG_ERROR, "Input packet too small\n");
ret = AVERROR_INVALIDDATA;
fail:
av_packet_free(&in);
return ret;
}

AVBitStreamFilter ff_aac_adtstoasc_bsf = {
static int aac_adtstoasc_init(AVBSFContext *ctx)
{
av_freep(&ctx->par_out->extradata);
ctx->par_out->extradata_size = 0;

return 0;
}

static const enum AVCodecID codec_ids[] = {
AV_CODEC_ID_AAC, AV_CODEC_ID_NONE,
};

const AVBitStreamFilter ff_aac_adtstoasc_bsf = {
.name = "aac_adtstoasc",
.priv_data_size = sizeof(AACBSFContext),
.init = aac_adtstoasc_init,
.filter = aac_adtstoasc_filter,
.codec_ids = codec_ids,
};

+ 0
- 25
libavcodec/allcodecs.c View File

@@ -58,13 +58,6 @@
av_register_codec_parser(&ff_##x##_parser); \
}

#define REGISTER_BSF(X, x) \
{ \
extern AVBitStreamFilter ff_##x##_bsf; \
if (CONFIG_##X##_BSF) \
av_register_bitstream_filter(&ff_##x##_bsf); \
}

void avcodec_register_all(void)
{
static int initialized;
@@ -667,22 +660,4 @@ void avcodec_register_all(void)
REGISTER_PARSER(VP3, vp3);
REGISTER_PARSER(VP8, vp8);
REGISTER_PARSER(VP9, vp9);

/* bitstream filters */
REGISTER_BSF(AAC_ADTSTOASC, aac_adtstoasc);
REGISTER_BSF(CHOMP, chomp);
REGISTER_BSF(DUMP_EXTRADATA, dump_extradata);
REGISTER_BSF(DCA_CORE, dca_core);
REGISTER_BSF(H264_MP4TOANNEXB, h264_mp4toannexb);
REGISTER_BSF(HEVC_MP4TOANNEXB, hevc_mp4toannexb);
REGISTER_BSF(IMX_DUMP_HEADER, imx_dump_header);
REGISTER_BSF(MJPEG2JPEG, mjpeg2jpeg);
REGISTER_BSF(MJPEGA_DUMP_HEADER, mjpega_dump_header);
REGISTER_BSF(MP3_HEADER_DECOMPRESS, mp3_header_decompress);
REGISTER_BSF(MPEG4_UNPACK_BFRAMES, mpeg4_unpack_bframes);
REGISTER_BSF(MOV2TEXTSUB, mov2textsub);
REGISTER_BSF(NOISE, noise);
REGISTER_BSF(REMOVE_EXTRADATA, remove_extradata);
REGISTER_BSF(TEXT2MOVSUB, text2movsub);
REGISTER_BSF(VP9_SUPERFRAME, vp9_superframe);
}

+ 190
- 7
libavcodec/avcodec.h View File

@@ -5386,7 +5386,7 @@ int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes);
*/
int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes);

#if FF_API_OLD_BSF
typedef struct AVBitStreamFilterContext {
void *priv_data;
struct AVBitStreamFilter *filter;
@@ -5398,19 +5398,102 @@ typedef struct AVBitStreamFilterContext {
*/
char *args;
} AVBitStreamFilterContext;
#endif

typedef struct AVBSFInternal AVBSFInternal;

/**
* The bitstream filter state.
*
* This struct must be allocated with av_bsf_alloc() and freed with
* av_bsf_free().
*
* The fields in the struct will only be changed (by the caller or by the
* filter) as described in their documentation, and are to be considered
* immutable otherwise.
*/
typedef struct AVBSFContext {
/**
* A class for logging and AVOptions
*/
const AVClass *av_class;

/**
* The bitstream filter this context is an instance of.
*/
const struct AVBitStreamFilter *filter;

/**
* Opaque libavcodec internal data. Must not be touched by the caller in any
* way.
*/
AVBSFInternal *internal;

/**
* Opaque filter-specific private data. If filter->priv_class is non-NULL,
* this is an AVOptions-enabled struct.
*/
void *priv_data;

/**
* Parameters of the input stream. Set by the caller before av_bsf_init().
*/
AVCodecParameters *par_in;

/**
* Parameters of the output stream. Set by the filter in av_bsf_init().
*/
AVCodecParameters *par_out;

/**
* The timebase used for the timestamps of the input packets. Set by the
* caller before av_bsf_init().
*/
AVRational time_base_in;

/**
* The timebase used for the timestamps of the output packets. Set by the
* filter in av_bsf_init().
*/
AVRational time_base_out;
} AVBSFContext;

typedef struct AVBitStreamFilter {
const char *name;

/**
* A list of codec ids supported by the filter, terminated by
* AV_CODEC_ID_NONE.
* May be NULL, in that case the bitstream filter works with any codec id.
*/
const enum AVCodecID *codec_ids;

/**
* A class for the private data, used to declare bitstream filter private
* AVOptions. This field is NULL for bitstream filters that do not declare
* any options.
*
* If this field is non-NULL, the first member of the filter private data
* must be a pointer to AVClass, which will be set by libavcodec generic
* code to this class.
*/
const AVClass *priv_class;

/*****************************************************************
* No fields below this line are part of the public API. They
* may not be used outside of libavcodec and can be changed and
* removed at will.
* New public fields should be added right above.
*****************************************************************
*/

int priv_data_size;
int (*filter)(AVBitStreamFilterContext *bsfc,
AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe);
void (*close)(AVBitStreamFilterContext *bsfc);
struct AVBitStreamFilter *next;
int (*init)(AVBSFContext *ctx);
int (*filter)(AVBSFContext *ctx, AVPacket *pkt);
void (*close)(AVBSFContext *ctx);
} AVBitStreamFilter;

#if FF_API_OLD_BSF
/**
* Register a bitstream filter.
*
@@ -5420,6 +5503,7 @@ typedef struct AVBitStreamFilter {
*
* @see avcodec_register_all()
*/
attribute_deprecated
void av_register_bitstream_filter(AVBitStreamFilter *bsf);

/**
@@ -5432,6 +5516,7 @@ void av_register_bitstream_filter(AVBitStreamFilter *bsf);
* @return a bitstream filter context if a matching filter was found
* and successfully initialized, NULL otherwise
*/
attribute_deprecated
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);

/**
@@ -5463,6 +5548,7 @@ AVBitStreamFilterContext *av_bitstream_filter_init(const char *name);
* its starting address). A special case is if *poutbuf was set to NULL and
* *poutbuf_size was set to 0, which indicates the packet should be dropped.
*/
attribute_deprecated
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
@@ -5474,6 +5560,7 @@ int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
* @param bsf the bitstream filter context created with
* av_bitstream_filter_init(), can be NULL
*/
attribute_deprecated
void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);

/**
@@ -5484,7 +5571,103 @@ void av_bitstream_filter_close(AVBitStreamFilterContext *bsf);
* This function can be used to iterate over all registered bitstream
* filters.
*/
attribute_deprecated
AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f);
#endif

/**
* @return a bitstream filter with the specified name or NULL if no such
* bitstream filter exists.
*/
const AVBitStreamFilter *av_bsf_get_by_name(const char *name);

/**
* Iterate over all registered bitstream filters.
*
* @param opaque a pointer where libavcodec will store the iteration state. Must
* point to NULL to start the iteration.
*
* @return the next registered bitstream filter or NULL when the iteration is
* finished
*/
const AVBitStreamFilter *av_bsf_next(void **opaque);

/**
* Allocate a context for a given bitstream filter. The caller must fill in the
* context parameters as described in the documentation and then call
* av_bsf_init() before sending any data to the filter.
*
* @param filter the filter for which to allocate an instance.
* @param ctx a pointer into which the pointer to the newly-allocated context
* will be written. It must be freed with av_bsf_free() after the
* filtering is done.
*
* @return 0 on success, a negative AVERROR code on failure
*/
int av_bsf_alloc(const AVBitStreamFilter *filter, AVBSFContext **ctx);

/**
* Prepare the filter for use, after all the parameters and options have been
* set.
*/
int av_bsf_init(AVBSFContext *ctx);

/**
* Submit a packet for filtering.
*
* After sending each packet, the filter must be completely drained by calling
* av_bsf_receive_packet() repeatedly until it returns AVERROR(EAGAIN) or
* AVERROR_EOF.
*
* @param pkt the packet to filter. The bitstream filter will take ownership of
* the packet and reset the contents of pkt. pkt is not touched if an error occurs.
* This parameter may be NULL, which signals the end of the stream (i.e. no more
* packets will be sent). That will cause the filter to output any packets it
* may have buffered internally.
*
* @return 0 on success, a negative AVERROR on error.
*/
int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt);

/**
* Retrieve a filtered packet.
*
* @param[out] pkt this struct will be filled with the contents of the filtered
* packet. It is owned by the caller and must be freed using
* av_packet_unref() when it is no longer needed.
* This parameter should be "clean" (i.e. freshly allocated
* with av_packet_alloc() or unreffed with av_packet_unref())
* when this function is called. If this function returns
* successfully, the contents of pkt will be completely
* overwritten by the returned data. On failure, pkt is not
* touched.
*
* @return 0 on success. AVERROR(EAGAIN) if more packets need to be sent to the
* filter (using av_bsf_send_packet()) to get more output. AVERROR_EOF if there
* will be no further output from the filter. Another negative AVERROR value if
* an error occurs.
*
* @note one input packet may result in several output packets, so after sending
* a packet with av_bsf_send_packet(), this function needs to be called
* repeatedly until it stops returning 0. It is also possible for a filter to
* output fewer packets than were sent to it, so this function may return
* AVERROR(EAGAIN) immediately after a successful av_bsf_send_packet() call.
*/
int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt);

/**
* Free a bitstream filter context and everything associated with it; write NULL
* into the supplied pointer.
*/
void av_bsf_free(AVBSFContext **ctx);

/**
* Get the AVClass for AVBSFContext. It can be used in combination with
* AV_OPT_SEARCH_FAKE_OBJ for examining options.
*
* @see av_opt_find().
*/
const AVClass *av_bsf_get_class(void);

/* memory */



+ 119
- 36
libavcodec/bitstream_filter.c View File

@@ -22,59 +22,75 @@

#include "avcodec.h"
#include "libavutil/atomic.h"
#include "libavutil/internal.h"
#include "libavutil/mem.h"

static AVBitStreamFilter *first_bitstream_filter = NULL;
#if FF_API_OLD_BSF
FF_DISABLE_DEPRECATION_WARNINGS

AVBitStreamFilter *av_bitstream_filter_next(const AVBitStreamFilter *f)
{
if (f)
return f->next;
else
return first_bitstream_filter;
const AVBitStreamFilter *filter = NULL;
void *opaque = NULL;

while (filter != f)
filter = av_bsf_next(&opaque);

return av_bsf_next(&opaque);
}

void av_register_bitstream_filter(AVBitStreamFilter *bsf)
{
do {
bsf->next = first_bitstream_filter;
} while(bsf->next != avpriv_atomic_ptr_cas((void * volatile *)&first_bitstream_filter, bsf->next, bsf));
}

typedef struct BSFCompatContext {
AVBSFContext *ctx;
int extradata_updated;
} BSFCompatContext;

AVBitStreamFilterContext *av_bitstream_filter_init(const char *name)
{
AVBitStreamFilter *bsf = NULL;

while (bsf = av_bitstream_filter_next(bsf)) {
if (!strcmp(name, bsf->name)) {
AVBitStreamFilterContext *bsfc =
av_mallocz(sizeof(AVBitStreamFilterContext));
if (!bsfc)
return NULL;
bsfc->filter = bsf;
bsfc->priv_data = NULL;
if (bsf->priv_data_size) {
bsfc->priv_data = av_mallocz(bsf->priv_data_size);
if (!bsfc->priv_data) {
av_freep(&bsfc);
return NULL;
}
}
return bsfc;
}
}
AVBitStreamFilterContext *ctx = NULL;
BSFCompatContext *priv = NULL;
const AVBitStreamFilter *bsf;

bsf = av_bsf_get_by_name(name);
if (!bsf)
return NULL;

ctx = av_mallocz(sizeof(*ctx));
if (!ctx)
return NULL;

priv = av_mallocz(sizeof(*priv));
if (!priv)
goto fail;


ctx->filter = bsf;
ctx->priv_data = priv;

return ctx;

fail:
if (priv)
av_bsf_free(&priv->ctx);
av_freep(&priv);
av_freep(&ctx);
return NULL;
}

void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc)
{
BSFCompatContext *priv;

if (!bsfc)
return;
if (bsfc->filter->close)
bsfc->filter->close(bsfc);

priv = bsfc->priv_data;

av_bsf_free(&priv->ctx);
av_freep(&bsfc->priv_data);
av_freep(&bsfc->args);
av_parser_close(bsfc->parser);
av_free(bsfc);
}

@@ -83,8 +99,75 @@ int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe)
{
*poutbuf = (uint8_t *)buf;
*poutbuf_size = buf_size;
return bsfc->filter->filter(bsfc, avctx, args ? args : bsfc->args,
poutbuf, poutbuf_size, buf, buf_size, keyframe);
BSFCompatContext *priv = bsfc->priv_data;
AVPacket pkt = { 0 };
int ret;

if (!priv->ctx) {
ret = av_bsf_alloc(bsfc->filter, &priv->ctx);
if (ret < 0)
return ret;

ret = avcodec_parameters_from_context(priv->ctx->par_in, avctx);
if (ret < 0)
return ret;

priv->ctx->time_base_in = avctx->time_base;

ret = av_bsf_init(priv->ctx);
if (ret < 0)
return ret;
}

pkt.data = buf;
pkt.size = buf_size;

ret = av_bsf_send_packet(priv->ctx, &pkt);
if (ret < 0)
return ret;

*poutbuf = NULL;
*poutbuf_size = 0;

ret = av_bsf_receive_packet(priv->ctx, &pkt);
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
return 0;
else if (ret < 0)
return ret;

*poutbuf = av_malloc(pkt.size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!*poutbuf) {
av_packet_unref(&pkt);
return AVERROR(ENOMEM);
}

*poutbuf_size = pkt.size;
memcpy(*poutbuf, pkt.data, pkt.size);

av_packet_unref(&pkt);

/* drain all the remaining packets we cannot return */
while (ret >= 0) {
ret = av_bsf_receive_packet(priv->ctx, &pkt);
av_packet_unref(&pkt);
}

if (!priv->extradata_updated) {
/* update extradata in avctx from the output codec parameters */
if (priv->ctx->par_out->extradata_size && (!args || !strstr(args, "private_spspps_buf"))) {
av_freep(&avctx->extradata);
avctx->extradata_size = 0;
avctx->extradata = av_mallocz(priv->ctx->par_out->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!avctx->extradata)
return AVERROR(ENOMEM);
memcpy(avctx->extradata, priv->ctx->par_out->extradata, priv->ctx->par_out->extradata_size);
avctx->extradata_size = priv->ctx->par_out->extradata_size;
}

priv->extradata_updated = 1;
}

return 1;
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif

+ 137
- 0
libavcodec/bitstream_filters.c View File

@@ -0,0 +1,137 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include "config.h"

#include "libavutil/common.h"
#include "libavutil/log.h"

#include "avcodec.h"
#include "bsf.h"

extern const AVBitStreamFilter ff_aac_adtstoasc_bsf;
extern const AVBitStreamFilter ff_chomp_bsf;
extern const AVBitStreamFilter ff_dump_extradata_bsf;
extern const AVBitStreamFilter ff_dca_core_bsf;
extern const AVBitStreamFilter ff_h264_mp4toannexb_bsf;
extern const AVBitStreamFilter ff_hevc_mp4toannexb_bsf;
extern const AVBitStreamFilter ff_imx_dump_header_bsf;
extern const AVBitStreamFilter ff_mjpeg2jpeg_bsf;
extern const AVBitStreamFilter ff_mjpega_dump_header_bsf;
extern const AVBitStreamFilter ff_mp3_header_decompress_bsf;
extern const AVBitStreamFilter ff_mpeg4_unpack_bframes_bsf;
extern const AVBitStreamFilter ff_mov2textsub_bsf;
extern const AVBitStreamFilter ff_noise_bsf;
extern const AVBitStreamFilter ff_remove_extradata_bsf;
extern const AVBitStreamFilter ff_text2movsub_bsf;
extern const AVBitStreamFilter ff_vp9_superframe_bsf;

static const AVBitStreamFilter *bitstream_filters[] = {
#if CONFIG_AAC_ADTSTOASC_BSF
&ff_aac_adtstoasc_bsf,
#endif
#if CONFIG_CHOMP_BSF
&ff_chomp_bsf,
#endif
#if CONFIG_DUMP_EXTRADATA_BSF
&ff_dump_extradata_bsf,
#endif
#if CONFIG_DCA_CORE_BSF
&ff_dca_core_bsf,
#endif
#if CONFIG_H264_MP4TOANNEXB_BSF
&ff_h264_mp4toannexb_bsf,
#endif
#if CONFIG_HEVC_MP4TOANNEXB_BSF
&ff_hevc_mp4toannexb_bsf,
#endif
#if CONFIG_IMX_DUMP_HEADER_BSF
&ff_imx_dump_header_bsf,
#endif
#if CONFIG_MJPEG2JPEG_BSF
&ff_mjpeg2jpeg_bsf,
#endif
#if CONFIG_MJPEGA_DUMP_HEADER_BSF
&ff_mjpega_dump_header_bsf,
#endif
#if CONFIG_MP3_HEADER_DECOMPRESS_BSF
&ff_mp3_header_decompress_bsf,
#endif
#if CONFIG_MPEG4_UNPACK_BFRAMES_BSF
&ff_mpeg4_unpack_bframes_bsf,
#endif
#if CONFIG_MOV2TEXTSUB_BSF
&ff_mov2textsub_bsf,
#endif
#if CONFIG_NOISE_BSF
&ff_noise_bsf,
#endif
#if CONFIG_REMOVE_EXTRADATA_BSF
&ff_remove_extradata_bsf,
#endif
#if CONFIG_TEXT2MOVSUB_BSF
&ff_text2movsub_bsf,
#endif
#if CONFIG_VP9_SUPERFRAME_BSF
&ff_vp9_superframe_bsf,
#endif
NULL,
};

const AVBitStreamFilter *av_bsf_next(void **opaque)
{
uintptr_t i = (uintptr_t)*opaque;
const AVBitStreamFilter *f = bitstream_filters[i];

if (f)
*opaque = (void*)(i + 1);

return f;
}

const AVBitStreamFilter *av_bsf_get_by_name(const char *name)
{
int i;

for (i = 0; bitstream_filters[i]; i++) {
const AVBitStreamFilter *f = bitstream_filters[i];
if (!strcmp(f->name, name))
return f;
}

return NULL;
}

const AVClass *ff_bsf_child_class_next(const AVClass *prev)
{
int i;

/* find the filter that corresponds to prev */
for (i = 0; prev && bitstream_filters[i]; i++) {
if (bitstream_filters[i]->priv_class == prev) {
i++;
break;
}
}

/* find next filter with priv options */
for (; bitstream_filters[i]; i++)
if (bitstream_filters[i]->priv_class)
return bitstream_filters[i]->priv_class;
return NULL;
}

+ 219
- 0
libavcodec/bsf.c View File

@@ -0,0 +1,219 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include <string.h>

#include "libavutil/log.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"

#include "avcodec.h"
#include "bsf.h"

struct AVBSFInternal {
AVPacket *buffer_pkt;
int eof;
};

void av_bsf_free(AVBSFContext **pctx)
{
AVBSFContext *ctx;

if (!pctx || !*pctx)
return;
ctx = *pctx;

if (ctx->filter->close)
ctx->filter->close(ctx);
if (ctx->filter->priv_class && ctx->priv_data)
av_opt_free(ctx->priv_data);

av_opt_free(ctx);

av_packet_free(&ctx->internal->buffer_pkt);
av_freep(&ctx->internal);
av_freep(&ctx->priv_data);

avcodec_parameters_free(&ctx->par_in);
avcodec_parameters_free(&ctx->par_out);

av_freep(pctx);
}

static void *bsf_child_next(void *obj, void *prev)
{
AVBSFContext *ctx = obj;
if (!prev && ctx->filter->priv_class)
return ctx->priv_data;
return NULL;
}

static const AVClass bsf_class = {
.class_name = "AVBSFContext",
.item_name = av_default_item_name,
.version = LIBAVUTIL_VERSION_INT,
.child_next = bsf_child_next,
.child_class_next = ff_bsf_child_class_next,
};

const AVClass *av_bsf_get_class(void)
{
return &bsf_class;
}

int av_bsf_alloc(const AVBitStreamFilter *filter, AVBSFContext **pctx)
{
AVBSFContext *ctx;
int ret;

ctx = av_mallocz(sizeof(*ctx));
if (!ctx)
return AVERROR(ENOMEM);

ctx->av_class = &bsf_class;
ctx->filter = filter;

ctx->par_in = avcodec_parameters_alloc();
ctx->par_out = avcodec_parameters_alloc();
if (!ctx->par_in || !ctx->par_out) {
ret = AVERROR(ENOMEM);
goto fail;
}

ctx->internal = av_mallocz(sizeof(*ctx->internal));
if (!ctx->internal) {
ret = AVERROR(ENOMEM);
goto fail;
}

ctx->internal->buffer_pkt = av_packet_alloc();
if (!ctx->internal->buffer_pkt) {
ret = AVERROR(ENOMEM);
goto fail;
}

av_opt_set_defaults(ctx);

/* allocate priv data and init private options */
if (filter->priv_data_size) {
ctx->priv_data = av_mallocz(filter->priv_data_size);
if (!ctx->priv_data) {
ret = AVERROR(ENOMEM);
goto fail;
}
if (filter->priv_class) {
*(const AVClass **)ctx->priv_data = filter->priv_class;
av_opt_set_defaults(ctx->priv_data);
}
}

*pctx = ctx;
return 0;
fail:
av_bsf_free(&ctx);
return ret;
}

int av_bsf_init(AVBSFContext *ctx)
{
int ret, i;

/* check that the codec is supported */
if (ctx->filter->codec_ids) {
for (i = 0; ctx->filter->codec_ids[i] != AV_CODEC_ID_NONE; i++)
if (ctx->par_in->codec_id == ctx->filter->codec_ids[i])
break;
if (ctx->filter->codec_ids[i] == AV_CODEC_ID_NONE) {
const AVCodecDescriptor *desc = avcodec_descriptor_get(ctx->par_in->codec_id);
av_log(ctx, AV_LOG_ERROR, "Codec '%s' (%d) is not supported by the "
"bitstream filter '%s'. Supported codecs are: ",
desc ? desc->name : "unknown", ctx->par_in->codec_id, ctx->filter->name);
for (i = 0; ctx->filter->codec_ids[i] != AV_CODEC_ID_NONE; i++) {
desc = avcodec_descriptor_get(ctx->filter->codec_ids[i]);
av_log(ctx, AV_LOG_ERROR, "%s (%d) ",
desc ? desc->name : "unknown", ctx->filter->codec_ids[i]);
}
av_log(ctx, AV_LOG_ERROR, "\n");
return AVERROR(EINVAL);
}
}

/* initialize output parameters to be the same as input
* init below might overwrite that */
ret = avcodec_parameters_copy(ctx->par_out, ctx->par_in);
if (ret < 0)
return ret;

ctx->time_base_out = ctx->time_base_in;

if (ctx->filter->init) {
ret = ctx->filter->init(ctx);
if (ret < 0)
return ret;
}

return 0;
}

int av_bsf_send_packet(AVBSFContext *ctx, AVPacket *pkt)
{
if (!pkt || !pkt->data) {
ctx->internal->eof = 1;
return 0;
}

if (ctx->internal->eof) {
av_log(ctx, AV_LOG_ERROR, "A non-NULL packet sent after an EOF.\n");
return AVERROR(EINVAL);
}

if (ctx->internal->buffer_pkt->data ||
ctx->internal->buffer_pkt->side_data_elems)
return AVERROR(EAGAIN);

av_packet_move_ref(ctx->internal->buffer_pkt, pkt);

return 0;
}

int av_bsf_receive_packet(AVBSFContext *ctx, AVPacket *pkt)
{
return ctx->filter->filter(ctx, pkt);
}

int ff_bsf_get_packet(AVBSFContext *ctx, AVPacket **pkt)
{
AVBSFInternal *in = ctx->internal;
AVPacket *tmp_pkt;

if (in->eof)
return AVERROR_EOF;

if (!ctx->internal->buffer_pkt->data &&
!ctx->internal->buffer_pkt->side_data_elems)
return AVERROR(EAGAIN);

tmp_pkt = av_packet_alloc();
if (!tmp_pkt)
return AVERROR(ENOMEM);

*pkt = ctx->internal->buffer_pkt;
ctx->internal->buffer_pkt = tmp_pkt;

return 0;
}

+ 33
- 0
libavcodec/bsf.h View File

@@ -0,0 +1,33 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#ifndef AVCODEC_BSF_H
#define AVCODEC_BSF_H

#include "avcodec.h"

/**
* Called by the biststream filters to get the next packet for filtering.
* The filter is responsible for either freeing the packet or passing it to the
* caller.
*/
int ff_bsf_get_packet(AVBSFContext *ctx, AVPacket **pkt);

const AVClass *ff_bsf_child_class_next(const AVClass *prev);

#endif /* AVCODEC_BSF_H */

+ 14
- 10
libavcodec/chomp_bsf.c View File

@@ -20,19 +20,23 @@
*/

#include "avcodec.h"
#include "bsf.h"
#include "internal.h"

static int chomp_filter(AVBitStreamFilterContext *bsfc,
AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size,
int keyframe)
static int chomp_filter(AVBSFContext *ctx, AVPacket *out)
{
while (buf_size > 0 && !buf[buf_size-1])
buf_size--;
AVPacket *in;
int ret;

*poutbuf = (uint8_t*) buf;
*poutbuf_size = buf_size;
ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

while (in->size > 0 && !in->data[in->size - 1])
in->size--;

av_packet_move_ref(out, in);
av_packet_free(&in);

return 0;
}
@@ -40,7 +44,7 @@ static int chomp_filter(AVBitStreamFilterContext *bsfc,
/**
* This filter removes a string of NULL bytes from the end of a packet.
*/
AVBitStreamFilter ff_chomp_bsf = {
const AVBitStreamFilter ff_chomp_bsf = {
.name = "chomp",
.filter = chomp_filter,
};

+ 21
- 15
libavcodec/dca_core_bsf.c View File

@@ -19,21 +19,23 @@
*/

#include "avcodec.h"
#include "bsf.h"
#include "bytestream.h"
#include "dca_syncwords.h"
#include "libavutil/mem.h"

static int dca_core(AVBitStreamFilterContext *bsfc,
AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size,
int keyframe)
static int dca_core_filter(AVBSFContext *ctx, AVPacket *out)
{
AVPacket *in;
GetByteContext gb;
uint32_t syncword;
int core_size = 0;
int core_size = 0, ret;

bytestream2_init(&gb, buf, buf_size);
ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

bytestream2_init(&gb, in->data, in->size);
syncword = bytestream2_get_be32(&gb);
bytestream2_skip(&gb, 1);

@@ -43,18 +45,22 @@ static int dca_core(AVBitStreamFilterContext *bsfc,
break;
}

*poutbuf = (uint8_t *)buf;
av_packet_move_ref(out, in);
av_packet_free(&in);

if (core_size > 0 && core_size <= buf_size) {
*poutbuf_size = core_size;
} else {
*poutbuf_size = buf_size;
if (core_size > 0 && core_size <= out->size) {
out->size = core_size;
}

return 0;
}

AVBitStreamFilter ff_dca_core_bsf = {
.name = "dca_core",
.filter = dca_core,
static const enum AVCodecID codec_ids[] = {
AV_CODEC_ID_DTS, AV_CODEC_ID_NONE,
};

const AVBitStreamFilter ff_dca_core_bsf = {
.name = "dca_core",
.filter = dca_core_filter,
.codec_ids = codec_ids,
};

+ 70
- 23
libavcodec/dump_extradata_bsf.c View File

@@ -21,34 +21,81 @@
#include <string.h>

#include "avcodec.h"
#include "bsf.h"

#include "libavutil/log.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"

enum DumpFreq {
DUMP_FREQ_KEYFRAME,
DUMP_FREQ_ALL,
};

typedef struct DumpExtradataContext {
const AVClass *class;
int freq;
} DumpExtradataContext;

static int dump_extradata(AVBSFContext *ctx, AVPacket *out)
{
DumpExtradataContext *s = ctx->priv_data;
AVPacket *in;
int ret = 0;

ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

if (ctx->par_in->extradata &&
(s->freq == DUMP_FREQ_ALL ||
(s->freq == DUMP_FREQ_KEYFRAME && in->flags & AV_PKT_FLAG_KEY))) {
if (in->size >= INT_MAX - ctx->par_in->extradata_size) {
ret = AVERROR(ERANGE);
goto fail;
}

ret = av_new_packet(out, in->size + ctx->par_in->extradata_size);
if (ret < 0)
goto fail;

static int dump_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe){
int cmd= args ? *args : 0;
/* cast to avoid warning about discarding qualifiers */
if(avctx->extradata){
if( (keyframe && (avctx->flags2 & AV_CODEC_FLAG2_LOCAL_HEADER) && cmd == 'a')
||(keyframe && (cmd=='k' || !cmd))
||(cmd=='e')
/*||(? && (s->flags & PARSER_FLAG_DUMP_EXTRADATA_AT_BEGIN)*/){
int size= buf_size + avctx->extradata_size;
*poutbuf_size= size;
*poutbuf= av_malloc(size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!*poutbuf)
return AVERROR(ENOMEM);

memcpy(*poutbuf, avctx->extradata, avctx->extradata_size);
memcpy((*poutbuf) + avctx->extradata_size, buf, buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
return 1;
ret = av_packet_copy_props(out, in);
if (ret < 0) {
av_packet_unref(out);
goto fail;
}

memcpy(out->data, ctx->par_in->extradata, ctx->par_in->extradata_size);
memcpy(out->data + ctx->par_in->extradata_size, in->data, in->size);
} else {
av_packet_move_ref(out, in);
}
return 0;

fail:
av_packet_free(&in);

return ret;
}

AVBitStreamFilter ff_dump_extradata_bsf={
.name = "dump_extra",
.filter = dump_extradata,
#define OFFSET(x) offsetof(DumpExtradataContext, x)
static const AVOption options[] = {
{ "freq", "When do dump extradata", OFFSET(freq), AV_OPT_TYPE_INT,
{ .i64 = DUMP_FREQ_KEYFRAME }, DUMP_FREQ_KEYFRAME, DUMP_FREQ_ALL, 0, "freq" },
{ "keyframe", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_KEYFRAME }, .unit = "freq" },
{ "all", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = DUMP_FREQ_ALL }, .unit = "freq" },
{ NULL },
};

static const AVClass dump_extradata_class = {
.class_name = "dump_extradata bsf",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_MAJOR,
};

const AVBitStreamFilter ff_dump_extradata_bsf = {
.name = "dump_extra",
.priv_data_size = sizeof(DumpExtradataContext),
.priv_class = &dump_extradata_class,
.filter = dump_extradata,
};

+ 109
- 113
libavcodec/h264_mp4toannexb_bsf.c View File

@@ -23,7 +23,9 @@

#include "libavutil/intreadwrite.h"
#include "libavutil/mem.h"

#include "avcodec.h"
#include "bsf.h"

typedef struct H264BSFContext {
int32_t sps_offset;
@@ -33,66 +35,53 @@ typedef struct H264BSFContext {
uint8_t idr_sps_seen;
uint8_t idr_pps_seen;
int extradata_parsed;

/* When private_spspps is zero then spspps_buf points to global extradata
and bsf does replace a global extradata to own-allocated version (default
behaviour).
When private_spspps is non-zero the bsf uses a private version of spspps buf.
This mode necessary when bsf uses in decoder, else bsf has issues after
decoder re-initialization. Use the "private_spspps_buf" argument to
activate this mode.
*/
int private_spspps;
uint8_t *spspps_buf;
uint32_t spspps_size;
} H264BSFContext;

static int alloc_and_copy(uint8_t **poutbuf, int *poutbuf_size,
static int alloc_and_copy(AVPacket *out,
const uint8_t *sps_pps, uint32_t sps_pps_size,
const uint8_t *in, uint32_t in_size)
{
uint32_t offset = *poutbuf_size;
uint32_t offset = out->size;
uint8_t nal_header_size = offset ? 3 : 4;
int err;

*poutbuf_size += sps_pps_size + in_size + nal_header_size;
if ((err = av_reallocp(poutbuf,
*poutbuf_size + AV_INPUT_BUFFER_PADDING_SIZE)) < 0) {
*poutbuf_size = 0;
err = av_grow_packet(out, sps_pps_size + in_size + nal_header_size);
if (err < 0)
return err;
}

if (sps_pps)
memcpy(*poutbuf + offset, sps_pps, sps_pps_size);
memcpy(*poutbuf + sps_pps_size + nal_header_size + offset, in, in_size);
memcpy(out->data + offset, sps_pps, sps_pps_size);
memcpy(out->data + sps_pps_size + nal_header_size + offset, in, in_size);
if (!offset) {
AV_WB32(*poutbuf + sps_pps_size, 1);
AV_WB32(out->data + sps_pps_size, 1);
} else {
(*poutbuf + offset + sps_pps_size)[0] =
(*poutbuf + offset + sps_pps_size)[1] = 0;
(*poutbuf + offset + sps_pps_size)[2] = 1;
(out->data + offset + sps_pps_size)[0] =
(out->data + offset + sps_pps_size)[1] = 0;
(out->data + offset + sps_pps_size)[2] = 1;
}

return 0;
}

static int h264_extradata_to_annexb(H264BSFContext *ctx, AVCodecContext *avctx, const int padding)
static int h264_extradata_to_annexb(AVBSFContext *ctx, const int padding)
{
H264BSFContext *s = ctx->priv_data;
uint16_t unit_size;
uint64_t total_size = 0;
uint8_t *out = NULL, unit_nb, sps_done = 0,
sps_seen = 0, pps_seen = 0;
const uint8_t *extradata = avctx->extradata + 4;
const uint8_t *extradata = ctx->par_in->extradata + 4;
static const uint8_t nalu_header[4] = { 0, 0, 0, 1 };
int length_size = (*extradata++ & 0x3) + 1; // retrieve length coded size

ctx->sps_offset = ctx->pps_offset = -1;
s->sps_offset = s->pps_offset = -1;

/* retrieve sps and pps unit(s) */
unit_nb = *extradata++ & 0x1f; /* number of sps unit(s) */
if (!unit_nb) {
goto pps;
} else {
ctx->sps_offset = 0;
s->sps_offset = 0;
sps_seen = 1;
}

@@ -102,13 +91,13 @@ static int h264_extradata_to_annexb(H264BSFContext *ctx, AVCodecContext *avctx,
unit_size = AV_RB16(extradata);
total_size += unit_size + 4;
if (total_size > INT_MAX - padding) {
av_log(avctx, AV_LOG_ERROR,
av_log(ctx, AV_LOG_ERROR,
"Too big extradata size, corrupted stream or invalid MP4/AVCC bitstream\n");
av_free(out);
return AVERROR(EINVAL);
}
if (extradata + 2 + unit_size > avctx->extradata + avctx->extradata_size) {
av_log(avctx, AV_LOG_ERROR, "Packet header is not contained in global extradata, "
if (extradata + 2 + unit_size > ctx->par_in->extradata + ctx->par_in->extradata_size) {
av_log(ctx, AV_LOG_ERROR, "Packet header is not contained in global extradata, "
"corrupted stream or invalid MP4/AVCC bitstream\n");
av_free(out);
return AVERROR(EINVAL);
@@ -122,7 +111,7 @@ pps:
if (!unit_nb && !sps_done++) {
unit_nb = *extradata++; /* number of pps unit(s) */
if (unit_nb) {
ctx->pps_offset = total_size;
s->pps_offset = total_size;
pps_seen = 1;
}
}
@@ -132,93 +121,100 @@ pps:
memset(out + total_size, 0, padding);

if (!sps_seen)
av_log(avctx, AV_LOG_WARNING,
av_log(ctx, AV_LOG_WARNING,
"Warning: SPS NALU missing or invalid. "
"The resulting stream may not play.\n");

if (!pps_seen)
av_log(avctx, AV_LOG_WARNING,
av_log(ctx, AV_LOG_WARNING,
"Warning: PPS NALU missing or invalid. "
"The resulting stream may not play.\n");

if (!ctx->private_spspps) {
av_free(avctx->extradata);
avctx->extradata = out;
avctx->extradata_size = total_size;
}
ctx->spspps_buf = out;
ctx->spspps_size = total_size;
av_freep(&ctx->par_out->extradata);
ctx->par_out->extradata = out;
ctx->par_out->extradata_size = total_size;

return length_size;
}

static int h264_mp4toannexb_filter(AVBitStreamFilterContext *bsfc,
AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size,
int keyframe)
static int h264_mp4toannexb_init(AVBSFContext *ctx)
{
H264BSFContext *ctx = bsfc->priv_data;
int i;
H264BSFContext *s = ctx->priv_data;
int ret;

/* retrieve sps and pps NAL units from extradata */
if (ctx->par_in->extradata_size >= 6) {
ret = h264_extradata_to_annexb(ctx, AV_INPUT_BUFFER_PADDING_SIZE);
if (ret < 0)
return ret;

s->length_size = ret;
s->new_idr = 1;
s->idr_sps_seen = 0;
s->idr_pps_seen = 0;
s->extradata_parsed = 1;
}

return 0;
}

static int h264_mp4toannexb_filter(AVBSFContext *ctx, AVPacket *out)
{
H264BSFContext *s = ctx->priv_data;

AVPacket *in;
uint8_t unit_type;
int32_t nal_size;
uint32_t cumul_size = 0;
const uint8_t *buf_end = buf + buf_size;
int ret = 0;
const uint8_t *buf;
const uint8_t *buf_end;
int buf_size;
int ret = 0, i;

ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

/* nothing to filter */
if (!avctx->extradata || avctx->extradata_size < 6) {
*poutbuf = (uint8_t *)buf;
*poutbuf_size = buf_size;
if (!s->extradata_parsed) {
av_packet_move_ref(out, in);
av_packet_free(&in);
return 0;
}

/* retrieve sps and pps NAL units from extradata */
if (!ctx->extradata_parsed) {
if (args && strstr(args, "private_spspps_buf"))
ctx->private_spspps = 1;
buf = in->data;
buf_size = in->size;
buf_end = in->data + in->size;

ret = h264_extradata_to_annexb(ctx, avctx, AV_INPUT_BUFFER_PADDING_SIZE);
if (ret < 0)
return ret;
ctx->length_size = ret;
ctx->new_idr = 1;
ctx->idr_sps_seen = 0;
ctx->idr_pps_seen = 0;
ctx->extradata_parsed = 1;
}

*poutbuf_size = 0;
*poutbuf = NULL;
do {
ret= AVERROR(EINVAL);
if (buf + ctx->length_size > buf_end)
if (buf + s->length_size > buf_end)
goto fail;

for (nal_size = 0, i = 0; i<ctx->length_size; i++)
for (nal_size = 0, i = 0; i<s->length_size; i++)
nal_size = (nal_size << 8) | buf[i];

buf += ctx->length_size;
buf += s->length_size;
unit_type = *buf & 0x1f;

if (nal_size > buf_end - buf || nal_size < 0)
goto fail;

if (unit_type == 7)
ctx->idr_sps_seen = ctx->new_idr = 1;
s->idr_sps_seen = s->new_idr = 1;
else if (unit_type == 8) {
ctx->idr_pps_seen = ctx->new_idr = 1;
s->idr_pps_seen = s->new_idr = 1;
/* if SPS has not been seen yet, prepend the AVCC one to PPS */
if (!ctx->idr_sps_seen) {
if (ctx->sps_offset == -1)
av_log(avctx, AV_LOG_WARNING, "SPS not present in the stream, nor in AVCC, stream may be unreadable\n");
if (!s->idr_sps_seen) {
if (s->sps_offset == -1)
av_log(ctx, AV_LOG_WARNING, "SPS not present in the stream, nor in AVCC, stream may be unreadable\n");
else {
if ((ret = alloc_and_copy(poutbuf, poutbuf_size,
ctx->spspps_buf + ctx->sps_offset,
ctx->pps_offset != -1 ? ctx->pps_offset : ctx->spspps_size - ctx->sps_offset,
if ((ret = alloc_and_copy(out,
ctx->par_out->extradata + s->sps_offset,
s->pps_offset != -1 ? s->pps_offset : ctx->par_out->extradata_size - s->sps_offset,
buf, nal_size)) < 0)
goto fail;
ctx->idr_sps_seen = 1;
s->idr_sps_seen = 1;
goto next_nal;
}
}
@@ -227,61 +223,61 @@ static int h264_mp4toannexb_filter(AVBitStreamFilterContext *bsfc,
/* if this is a new IDR picture following an IDR picture, reset the idr flag.
* Just check first_mb_in_slice to be 0 as this is the simplest solution.
* This could be checking idr_pic_id instead, but would complexify the parsing. */
if (!ctx->new_idr && unit_type == 5 && (buf[1] & 0x80))
ctx->new_idr = 1;
if (!s->new_idr && unit_type == 5 && (buf[1] & 0x80))
s->new_idr = 1;

/* prepend only to the first type 5 NAL unit of an IDR picture, if no sps/pps are already present */
if (ctx->new_idr && unit_type == 5 && !ctx->idr_sps_seen && !ctx->idr_pps_seen) {
if ((ret=alloc_and_copy(poutbuf, poutbuf_size,
ctx->spspps_buf, ctx->spspps_size,
if (s->new_idr && unit_type == 5 && !s->idr_sps_seen && !s->idr_pps_seen) {
if ((ret=alloc_and_copy(out,
ctx->par_out->extradata, ctx->par_out->extradata_size,
buf, nal_size)) < 0)
goto fail;
ctx->new_idr = 0;
s->new_idr = 0;
/* if only SPS has been seen, also insert PPS */
} else if (ctx->new_idr && unit_type == 5 && ctx->idr_sps_seen && !ctx->idr_pps_seen) {
if (ctx->pps_offset == -1) {
av_log(avctx, AV_LOG_WARNING, "PPS not present in the stream, nor in AVCC, stream may be unreadable\n");
if ((ret = alloc_and_copy(poutbuf, poutbuf_size,
NULL, 0, buf, nal_size)) < 0)
} else if (s->new_idr && unit_type == 5 && s->idr_sps_seen && !s->idr_pps_seen) {
if (s->pps_offset == -1) {
av_log(ctx, AV_LOG_WARNING, "PPS not present in the stream, nor in AVCC, stream may be unreadable\n");
if ((ret = alloc_and_copy(out, NULL, 0, buf, nal_size)) < 0)
goto fail;
} else if ((ret = alloc_and_copy(poutbuf, poutbuf_size,
ctx->spspps_buf + ctx->pps_offset, ctx->spspps_size - ctx->pps_offset,
} else if ((ret = alloc_and_copy(out,
ctx->par_out->extradata + s->pps_offset, ctx->par_out->extradata_size - s->pps_offset,
buf, nal_size)) < 0)
goto fail;
} else {
if ((ret=alloc_and_copy(poutbuf, poutbuf_size,
NULL, 0, buf, nal_size)) < 0)
if ((ret=alloc_and_copy(out, NULL, 0, buf, nal_size)) < 0)
goto fail;
if (!ctx->new_idr && unit_type == 1) {
ctx->new_idr = 1;
ctx->idr_sps_seen = 0;
ctx->idr_pps_seen = 0;
if (!s->new_idr && unit_type == 1) {
s->new_idr = 1;
s->idr_sps_seen = 0;
s->idr_pps_seen = 0;
}
}

next_nal:
buf += nal_size;
cumul_size += nal_size + ctx->length_size;
cumul_size += nal_size + s->length_size;
} while (cumul_size < buf_size);

return 1;
ret = av_packet_copy_props(out, in);
if (ret < 0)
goto fail;

fail:
av_freep(poutbuf);
*poutbuf_size = 0;
if (ret < 0)
av_packet_unref(out);
av_packet_free(&in);

return ret;
}

static void h264_mp4toannexb_filter_close(AVBitStreamFilterContext *bsfc)
{
H264BSFContext *ctx = bsfc->priv_data;
if (ctx->private_spspps)
av_freep(&ctx->spspps_buf);
}
static const enum AVCodecID codec_ids[] = {
AV_CODEC_ID_H264, AV_CODEC_ID_NONE,
};

AVBitStreamFilter ff_h264_mp4toannexb_bsf = {
const AVBitStreamFilter ff_h264_mp4toannexb_bsf = {
.name = "h264_mp4toannexb",
.priv_data_size = sizeof(H264BSFContext),
.init = h264_mp4toannexb_init,
.filter = h264_mp4toannexb_filter,
.close = h264_mp4toannexb_filter_close,
.codec_ids = codec_ids,
};

+ 67
- 84
libavcodec/hevc_mp4toannexb_bsf.c View File

@@ -25,6 +25,7 @@
#include "libavutil/mem.h"

#include "avcodec.h"
#include "bsf.h"
#include "bytestream.h"
#include "hevc.h"

@@ -33,23 +34,9 @@
typedef struct HEVCBSFContext {
uint8_t length_size;
int extradata_parsed;

int logged_nonmp4_warning;

/* When private_spspps is zero then spspps_buf points to global extradata
and bsf does replace a global extradata to own-allocated version (default
behaviour).
When private_spspps is non-zero the bsf uses a private version of spspps buf.
This mode necessary when bsf uses in decoder, else bsf has issues after
decoder re-initialization. Use the "private_spspps_buf" argument to
activate this mode.
*/
int private_spspps;
uint8_t *spspps_buf;
uint32_t spspps_size;
} HEVCBSFContext;

static int hevc_extradata_to_annexb(HEVCBSFContext* ctx, AVCodecContext *avctx)
static int hevc_extradata_to_annexb(AVBSFContext *ctx)
{
GetByteContext gb;
int length_size, num_arrays, i, j;
@@ -58,7 +45,7 @@ static int hevc_extradata_to_annexb(HEVCBSFContext* ctx, AVCodecContext *avctx)
uint8_t *new_extradata = NULL;
size_t new_extradata_size = 0;

bytestream2_init(&gb, avctx->extradata, avctx->extradata_size);
bytestream2_init(&gb, ctx->par_in->extradata, ctx->par_in->extradata_size);

bytestream2_skip(&gb, 21);
length_size = (bytestream2_get_byte(&gb) & 3) + 1;
@@ -70,7 +57,7 @@ static int hevc_extradata_to_annexb(HEVCBSFContext* ctx, AVCodecContext *avctx)

if (!(type == NAL_VPS || type == NAL_SPS || type == NAL_PPS ||
type == NAL_SEI_PREFIX || type == NAL_SEI_SUFFIX)) {
av_log(avctx, AV_LOG_ERROR, "Invalid NAL unit type in extradata: %d\n",
av_log(ctx, AV_LOG_ERROR, "Invalid NAL unit type in extradata: %d\n",
type);
ret = AVERROR_INVALIDDATA;
goto fail;
@@ -94,16 +81,12 @@ static int hevc_extradata_to_annexb(HEVCBSFContext* ctx, AVCodecContext *avctx)
}
}

if (!ctx->private_spspps) {
av_freep(&avctx->extradata);
avctx->extradata = new_extradata;
avctx->extradata_size = new_extradata_size;
}
ctx->spspps_buf = new_extradata;
ctx->spspps_size = new_extradata_size;
av_freep(&ctx->par_out->extradata);
ctx->par_out->extradata = new_extradata;
ctx->par_out->extradata_size = new_extradata_size;

if (!new_extradata_size)
av_log(avctx, AV_LOG_WARNING, "No parameter sets in the extradata\n");
av_log(ctx, AV_LOG_WARNING, "No parameter sets in the extradata\n");

return length_size;
fail:
@@ -111,54 +94,54 @@ fail:
return ret;
}

static int hevc_mp4toannexb_filter(AVBitStreamFilterContext *bsfc,
AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size,
int keyframe)
static int hevc_mp4toannexb_init(AVBSFContext *ctx)
{
HEVCBSFContext *s = ctx->priv_data;
int ret;

if (ctx->par_in->extradata_size < MIN_HEVCC_LENGTH ||
AV_RB24(ctx->par_in->extradata) == 1 ||
AV_RB32(ctx->par_in->extradata) == 1) {
av_log(ctx, AV_LOG_VERBOSE,
"The input looks like it is Annex B already\n");
} else {
ret = hevc_extradata_to_annexb(ctx);
if (ret < 0)
return ret;
s->length_size = ret;
s->extradata_parsed = 1;
}

return 0;
}

static int hevc_mp4toannexb_filter(AVBSFContext *ctx, AVPacket *out)
{
HEVCBSFContext *ctx = bsfc->priv_data;
HEVCBSFContext *s = ctx->priv_data;
AVPacket *in;
GetByteContext gb;

uint8_t *out = NULL;
size_t out_size = 0;
int got_irap = 0;
int i, ret = 0;

if (!ctx->extradata_parsed) {
if (avctx->extradata_size < MIN_HEVCC_LENGTH ||
AV_RB24(avctx->extradata) == 1 ||
AV_RB32(avctx->extradata) == 1) {
if (!ctx->logged_nonmp4_warning) {
av_log(avctx, AV_LOG_VERBOSE,
"The input looks like it is Annex B already\n");
ctx->logged_nonmp4_warning = 1;
}
*poutbuf = (uint8_t *)buf;
*poutbuf_size = buf_size;
return 0;
}
if (args && strstr(args, "private_spspps_buf"))
ctx->private_spspps = 1;
ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

ret = hevc_extradata_to_annexb(ctx, avctx);
if (ret < 0)
return ret;
ctx->length_size = ret;
ctx->extradata_parsed = 1;
if (!s->extradata_parsed) {
av_packet_move_ref(out, in);
av_packet_free(&in);
return 0;
}

*poutbuf_size = 0;
*poutbuf = NULL;

bytestream2_init(&gb, buf, buf_size);
bytestream2_init(&gb, in->data, in->size);

while (bytestream2_get_bytes_left(&gb)) {
uint32_t nalu_size = 0;
int nalu_type;
int is_irap, add_extradata, extra_size;
int is_irap, add_extradata, extra_size, prev_size;

for (i = 0; i < ctx->length_size; i++)
for (i = 0; i < s->length_size; i++)
nalu_size = (nalu_size << 8) | bytestream2_get_byte(&gb);

nalu_type = (bytestream2_peek_byte(&gb) >> 1) & 0x3f;
@@ -166,47 +149,47 @@ static int hevc_mp4toannexb_filter(AVBitStreamFilterContext *bsfc,
/* prepend extradata to IRAP frames */
is_irap = nalu_type >= 16 && nalu_type <= 23;
add_extradata = is_irap && !got_irap;
extra_size = add_extradata * ctx->spspps_size;
extra_size = add_extradata * ctx->par_out->extradata_size;
got_irap |= is_irap;

if (SIZE_MAX - out_size < 4 ||
SIZE_MAX - out_size - 4 < nalu_size ||
SIZE_MAX - out_size - 4 - nalu_size < extra_size) {
if (SIZE_MAX - nalu_size < 4 ||
SIZE_MAX - 4 - nalu_size < extra_size) {
ret = AVERROR_INVALIDDATA;
goto fail;
}

ret = av_reallocp(&out, out_size + 4 + nalu_size + extra_size);
prev_size = out->size;

ret = av_grow_packet(out, 4 + nalu_size + extra_size);
if (ret < 0)
goto fail;

if (add_extradata)
memcpy(out + out_size, ctx->spspps_buf, extra_size);
AV_WB32(out + out_size + extra_size, 1);
bytestream2_get_buffer(&gb, out + out_size + 4 + extra_size, nalu_size);
out_size += 4 + nalu_size + extra_size;
memcpy(out->data + prev_size, ctx->par_out->extradata, extra_size);
AV_WB32(out->data + prev_size + extra_size, 1);
bytestream2_get_buffer(&gb, out->data + prev_size + 4 + extra_size, nalu_size);
}

*poutbuf = out;
*poutbuf_size = out_size;

return 1;
ret = av_packet_copy_props(out, in);
if (ret < 0)
goto fail;

fail:
av_freep(&out);
if (ret < 0)
av_packet_unref(out);
av_packet_free(&in);

return ret;
}

static void hevc_mp4toannexb_close(AVBitStreamFilterContext *bsfc)
{
HEVCBSFContext *ctx = bsfc->priv_data;
if (ctx->private_spspps)
av_freep(&ctx->spspps_buf);
}
static const enum AVCodecID codec_ids[] = {
AV_CODEC_ID_HEVC, AV_CODEC_ID_NONE,
};

AVBitStreamFilter ff_hevc_mp4toannexb_bsf = {
"hevc_mp4toannexb",
sizeof(HEVCBSFContext),
hevc_mp4toannexb_filter,
hevc_mp4toannexb_close,
const AVBitStreamFilter ff_hevc_mp4toannexb_bsf = {
.name = "hevc_mp4toannexb",
.priv_data_size = sizeof(HEVCBSFContext),
.init = hevc_mp4toannexb_init,
.filter = hevc_mp4toannexb_filter,
.codec_ids = codec_ids,
};

+ 39
- 23
libavcodec/imx_dump_header_bsf.c View File

@@ -26,35 +26,51 @@
*/

#include "avcodec.h"
#include "bsf.h"
#include "bytestream.h"


static int imx_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe)
static int imx_dump_header(AVBSFContext *ctx, AVPacket *out)
{
/* MXF essence element key */
static const uint8_t imx_header[16] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x05,0x01,0x01,0x00 };
uint8_t *poutbufp;

if (avctx->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
av_log(avctx, AV_LOG_ERROR, "imx bitstream filter only applies to mpeg2video codec\n");
return 0;
}

*poutbuf = av_malloc(buf_size + 20 + AV_INPUT_BUFFER_PADDING_SIZE);
if (!*poutbuf)
return AVERROR(ENOMEM);
poutbufp = *poutbuf;
bytestream_put_buffer(&poutbufp, imx_header, 16);
bytestream_put_byte(&poutbufp, 0x83); /* KLV BER long form */
bytestream_put_be24(&poutbufp, buf_size);
bytestream_put_buffer(&poutbufp, buf, buf_size);
*poutbuf_size = poutbufp - *poutbuf;
return 1;

AVPacket *in;
int ret = 0;
uint8_t *out_buf;

ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

ret = av_new_packet(out, in->size + 20);
if (ret < 0)
goto fail;

out_buf = out->data;

bytestream_put_buffer(&out_buf, imx_header, 16);
bytestream_put_byte(&out_buf, 0x83); /* KLV BER long form */
bytestream_put_be24(&out_buf, in->size);
bytestream_put_buffer(&out_buf, in->data, in->size);

ret = av_packet_copy_props(out, in);
if (ret < 0)
goto fail;

fail:
if (ret < 0)
av_packet_unref(out);
av_packet_free(&in);
return ret;
}

AVBitStreamFilter ff_imx_dump_header_bsf = {
.name = "imxdump",
.filter = imx_dump_header,
static const enum AVCodecID codec_ids[] = {
AV_CODEC_ID_MPEG2VIDEO, AV_CODEC_ID_NONE,
};

const AVBitStreamFilter ff_imx_dump_header_bsf = {
.name = "imxdump",
.filter = imx_dump_header,
.codec_ids = codec_ids,
};

+ 47
- 28
libavcodec/mjpeg2jpeg_bsf.c View File

@@ -31,6 +31,7 @@
#include "libavutil/intreadwrite.h"

#include "avcodec.h"
#include "bsf.h"
#include "jpegtables.h"
#include "mjpeg.h"

@@ -77,46 +78,64 @@ static uint8_t *append_dht_segment(uint8_t *buf)
return buf;
}

static int mjpeg2jpeg_filter(AVBitStreamFilterContext *bsfc,
AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size,
int keyframe)
static int mjpeg2jpeg_filter(AVBSFContext *ctx, AVPacket *out)
{
AVPacket *in;
int ret = 0;
int input_skip, output_size;
uint8_t *output, *out;
uint8_t *output;

if (buf_size < 12) {
av_log(avctx, AV_LOG_ERROR, "input is truncated\n");
return AVERROR_INVALIDDATA;
ret = ff_bsf_get_packet(ctx, &in);

if (in->size < 12) {
av_log(ctx, AV_LOG_ERROR, "input is truncated\n");
ret = AVERROR_INVALIDDATA;
goto fail;
}
if (AV_RB16(buf) != 0xffd8) {
av_log(avctx, AV_LOG_ERROR, "input is not MJPEG\n");
return AVERROR_INVALIDDATA;
if (AV_RB16(in->data) != 0xffd8) {
av_log(ctx, AV_LOG_ERROR, "input is not MJPEG\n");
ret = AVERROR_INVALIDDATA;
goto fail;
}
if (buf[2] == 0xff && buf[3] == APP0) {
input_skip = (buf[4] << 8) + buf[5] + 4;
if (in->data[2] == 0xff && in->data[3] == APP0) {
input_skip = (in->data[4] << 8) + in->data[5] + 4;
} else {
input_skip = 2;
}
if (buf_size < input_skip) {
av_log(avctx, AV_LOG_ERROR, "input is truncated\n");
return AVERROR_INVALIDDATA;
if (in->size < input_skip) {
av_log(ctx, AV_LOG_ERROR, "input is truncated\n");
ret = AVERROR_INVALIDDATA;
goto fail;
}
output_size = buf_size - input_skip +
output_size = in->size - input_skip +
sizeof(jpeg_header) + dht_segment_size;
output = out = av_malloc(output_size);
if (!output)
return AVERROR(ENOMEM);
out = append(out, jpeg_header, sizeof(jpeg_header));
out = append_dht_segment(out);
out = append(out, buf + input_skip, buf_size - input_skip);
*poutbuf = output;
*poutbuf_size = output_size;
return 1;
ret = av_new_packet(out, output_size);
if (ret < 0)
goto fail;

output = out->data;

output = append(output, jpeg_header, sizeof(jpeg_header));
output = append_dht_segment(output);
output = append(output, in->data + input_skip, in->size - input_skip);

ret = av_packet_copy_props(out, in);
if (ret < 0)
goto fail;

fail:
if (ret < 0)
av_packet_unref(out);
av_packet_free(&in);
return ret;
}

AVBitStreamFilter ff_mjpeg2jpeg_bsf = {
static const enum AVCodecID codec_ids[] = {
AV_CODEC_ID_MJPEG, AV_CODEC_ID_NONE,
};

const AVBitStreamFilter ff_mjpeg2jpeg_bsf = {
.name = "mjpeg2jpeg",
.filter = mjpeg2jpeg_filter,
.codec_ids = codec_ids,
};

+ 59
- 46
libavcodec/mjpega_dump_header_bsf.c View File

@@ -26,70 +26,83 @@
*/

#include "avcodec.h"
#include "bsf.h"
#include "bytestream.h"
#include "mjpeg.h"


static int mjpega_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe)
static int mjpega_dump_header(AVBSFContext *ctx, AVPacket *out)
{
uint8_t *poutbufp;
AVPacket *in;
uint8_t *out_buf;
unsigned dqt = 0, dht = 0, sof0 = 0;
int i;
int ret = 0, i;

if (avctx->codec_id != AV_CODEC_ID_MJPEG) {
av_log(avctx, AV_LOG_ERROR, "mjpega bitstream filter only applies to mjpeg codec\n");
return 0;
}
ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

ret = av_new_packet(out, in->size + 44);
if (ret < 0)
goto fail;

ret = av_packet_copy_props(out, in);
if (ret < 0)
goto fail;

*poutbuf_size = 0;
*poutbuf = av_malloc(buf_size + 44 + AV_INPUT_BUFFER_PADDING_SIZE);
if (!*poutbuf)
return AVERROR(ENOMEM);
poutbufp = *poutbuf;
bytestream_put_byte(&poutbufp, 0xff);
bytestream_put_byte(&poutbufp, SOI);
bytestream_put_byte(&poutbufp, 0xff);
bytestream_put_byte(&poutbufp, APP1);
bytestream_put_be16(&poutbufp, 42); /* size */
bytestream_put_be32(&poutbufp, 0);
bytestream_put_buffer(&poutbufp, "mjpg", 4);
bytestream_put_be32(&poutbufp, buf_size + 44); /* field size */
bytestream_put_be32(&poutbufp, buf_size + 44); /* pad field size */
bytestream_put_be32(&poutbufp, 0); /* next ptr */
out_buf = out->data;
bytestream_put_byte(&out_buf, 0xff);
bytestream_put_byte(&out_buf, SOI);
bytestream_put_byte(&out_buf, 0xff);
bytestream_put_byte(&out_buf, APP1);
bytestream_put_be16(&out_buf, 42); /* size */
bytestream_put_be32(&out_buf, 0);
bytestream_put_buffer(&out_buf, "mjpg", 4);
bytestream_put_be32(&out_buf, in->size + 44); /* field size */
bytestream_put_be32(&out_buf, in->size + 44); /* pad field size */
bytestream_put_be32(&out_buf, 0); /* next ptr */

for (i = 0; i < buf_size - 1; i++) {
if (buf[i] == 0xff) {
switch (buf[i + 1]) {
for (i = 0; i < in->size - 1; i++) {
if (in->data[i] == 0xff) {
switch (in->data[i + 1]) {
case DQT: dqt = i + 46; break;
case DHT: dht = i + 46; break;
case SOF0: sof0 = i + 46; break;
case SOS:
bytestream_put_be32(&poutbufp, dqt); /* quant off */
bytestream_put_be32(&poutbufp, dht); /* huff off */
bytestream_put_be32(&poutbufp, sof0); /* image off */
bytestream_put_be32(&poutbufp, i + 46); /* scan off */
bytestream_put_be32(&poutbufp, i + 46 + AV_RB16(buf + i + 2)); /* data off */
bytestream_put_buffer(&poutbufp, buf + 2, buf_size - 2); /* skip already written SOI */
*poutbuf_size = poutbufp - *poutbuf;
return 1;
bytestream_put_be32(&out_buf, dqt); /* quant off */
bytestream_put_be32(&out_buf, dht); /* huff off */
bytestream_put_be32(&out_buf, sof0); /* image off */
bytestream_put_be32(&out_buf, i + 46); /* scan off */
bytestream_put_be32(&out_buf, i + 46 + AV_RB16(in->data + i + 2)); /* data off */
bytestream_put_buffer(&out_buf, in->data + 2, in->size - 2); /* skip already written SOI */

out->size = out_buf - out->data;
av_packet_free(&in);
return 0;
case APP1:
if (i + 8 < buf_size && AV_RL32(buf + i + 8) == AV_RL32("mjpg")) {
av_log(avctx, AV_LOG_ERROR, "bitstream already formatted\n");
memcpy(*poutbuf, buf, buf_size);
*poutbuf_size = buf_size;
return 1;
if (i + 8 < in->size && AV_RL32(in->data + i + 8) == AV_RL32("mjpg")) {
av_log(ctx, AV_LOG_ERROR, "bitstream already formatted\n");
av_packet_unref(out);
av_packet_move_ref(out, in);
av_packet_free(&in);
return 0;
}
}
}
}
av_freep(poutbuf);
av_log(avctx, AV_LOG_ERROR, "could not find SOS marker in bitstream\n");
return 0;
av_log(ctx, AV_LOG_ERROR, "could not find SOS marker in bitstream\n");
fail:
av_packet_unref(out);
av_packet_free(&in);
return AVERROR_INVALIDDATA;
}

AVBitStreamFilter ff_mjpega_dump_header_bsf = {
.name = "mjpegadump",
.filter = mjpega_dump_header,
static const enum AVCodecID codec_ids[] = {
AV_CODEC_ID_MJPEG, AV_CODEC_ID_NONE,
};

const AVBitStreamFilter ff_mjpega_dump_header_bsf = {
.name = "mjpegadump",
.filter = mjpega_dump_header,
.codec_ids = codec_ids,
};

+ 63
- 23
libavcodec/movsub_bsf.c View File

@@ -21,39 +21,79 @@
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "bsf.h"

static int text2movsub(AVBSFContext *ctx, AVPacket *out)
{
AVPacket *in;
int ret = 0;

static int text2movsub(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe){
if (buf_size > 0xffff) return 0;
*poutbuf_size = buf_size + 2;
*poutbuf = av_malloc(*poutbuf_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!*poutbuf)
return AVERROR(ENOMEM);
AV_WB16(*poutbuf, buf_size);
memcpy(*poutbuf + 2, buf, buf_size);
return 1;
ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

if (in->size > 0xffff) {
ret = AVERROR_INVALIDDATA;
goto fail;
}

ret = av_new_packet(out, in->size + 2);
if (ret < 0) {
ret = AVERROR(ENOMEM);
goto fail;
}

ret = av_packet_copy_props(out, in);
if (ret < 0)
goto fail;

AV_WB16(out->data, in->size);
memcpy(out->data + 2, in->data, in->size);

fail:
if (ret < 0)
av_packet_unref(out);
av_packet_free(&in);
return ret;
}

AVBitStreamFilter ff_text2movsub_bsf={
const AVBitStreamFilter ff_text2movsub_bsf = {
.name = "text2movsub",
.filter = text2movsub,
};

static int mov2textsub(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe){
if (buf_size < 2) return 0;
*poutbuf_size = FFMIN(buf_size - 2, AV_RB16(buf));
*poutbuf = av_malloc(*poutbuf_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!*poutbuf)
return AVERROR(ENOMEM);
memcpy(*poutbuf, buf + 2, *poutbuf_size);
return 1;
static int mov2textsub(AVBSFContext *ctx, AVPacket *out)
{
AVPacket *in;
int ret = 0;

ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

if (in->size < 2) {
ret = AVERROR_INVALIDDATA;
goto fail;
}

ret = av_new_packet(out, FFMIN(in->size - 2, AV_RB16(in->data)));
if (ret < 0)
goto fail;

ret = av_packet_copy_props(out, in);
if (ret < 0)
goto fail;

memcpy(out->data, in->data + 2, out->size);

fail:
if (ret < 0)
av_packet_unref(out);
av_packet_free(&in);
return ret;
}

AVBitStreamFilter ff_mov2textsub_bsf={
const AVBitStreamFilter ff_mov2textsub_bsf = {
.name = "mov2textsub",
.filter = mov2textsub,
};

+ 50
- 23
libavcodec/mp3_header_decompress_bsf.c View File

@@ -21,32 +21,43 @@
#include "libavutil/common.h"
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "bsf.h"
#include "mpegaudiodecheader.h"
#include "mpegaudiodata.h"


static int mp3_header_decompress(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe){
static int mp3_header_decompress(AVBSFContext *ctx, AVPacket *out)
{
AVPacket *in;
uint32_t header;
int sample_rate= avctx->sample_rate;
int sample_rate= ctx->par_in->sample_rate;
int sample_rate_index=0;
int lsf, mpeg25, bitrate_index, frame_size;
int lsf, mpeg25, bitrate_index, frame_size, ret;
uint8_t *buf;
int buf_size;

ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

buf = in->data;
buf_size = in->size;

header = AV_RB32(buf);
if(ff_mpa_check_header(header) >= 0){
*poutbuf= (uint8_t *) buf;
*poutbuf_size= buf_size;
av_packet_move_ref(out, in);
av_packet_free(&in);

return 0;
}

if(avctx->extradata_size != 15 || strcmp(avctx->extradata, "FFCMP3 0.0")){
av_log(avctx, AV_LOG_ERROR, "Extradata invalid %d\n", avctx->extradata_size);
return -1;
if(ctx->par_in->extradata_size != 15 || strcmp(ctx->par_in->extradata, "FFCMP3 0.0")){
av_log(ctx, AV_LOG_ERROR, "Extradata invalid %d\n", ctx->par_in->extradata_size);
ret = AVERROR(EINVAL);
goto fail;
}

header= AV_RB32(avctx->extradata+11) & MP3_MASK;
header= AV_RB32(ctx->par_in->extradata+11) & MP3_MASK;

lsf = sample_rate < (24000+32000)/2;
mpeg25 = sample_rate < (12000+16000)/2;
@@ -62,20 +73,27 @@ static int mp3_header_decompress(AVBitStreamFilterContext *bsfc, AVCodecContext
break;
}
if(bitrate_index == 30){
av_log(avctx, AV_LOG_ERROR, "Could not find bitrate_index.\n");
return -1;
av_log(ctx, AV_LOG_ERROR, "Could not find bitrate_index.\n");
ret = AVERROR(EINVAL);
goto fail;
}

header |= (bitrate_index&1)<<9;
header |= (bitrate_index>>1)<<12;
header |= (frame_size == buf_size + 4)<<16; //FIXME actually set a correct crc instead of 0

*poutbuf_size= frame_size;
*poutbuf= av_malloc(frame_size + AV_INPUT_BUFFER_PADDING_SIZE);
memcpy(*poutbuf + frame_size - buf_size, buf, buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
ret = av_new_packet(out, frame_size);
if (ret < 0)
goto fail;
ret = av_packet_copy_props(out, in);
if (ret < 0) {
av_packet_free(&out);
goto fail;
}
memcpy(out->data + frame_size - buf_size, buf, buf_size + AV_INPUT_BUFFER_PADDING_SIZE);

if(avctx->channels==2){
uint8_t *p= *poutbuf + frame_size - buf_size;
if(ctx->par_in->channels==2){
uint8_t *p= out->data + frame_size - buf_size;
if(lsf){
FFSWAP(int, p[1], p[2]);
header |= (p[1] & 0xC0)>>2;
@@ -86,12 +104,21 @@ static int mp3_header_decompress(AVBitStreamFilterContext *bsfc, AVCodecContext
}
}

AV_WB32(*poutbuf, header);
AV_WB32(out->data, header);

return 1;
ret = 0;

fail:
av_packet_free(&in);
return ret;
}

AVBitStreamFilter ff_mp3_header_decompress_bsf={
.name = "mp3decomp",
.filter = mp3_header_decompress,
static const enum AVCodecID codec_ids[] = {
AV_CODEC_ID_MP3, AV_CODEC_ID_NONE,
};

const AVBitStreamFilter ff_mp3_header_decompress_bsf = {
.name = "mp3decomp",
.filter = mp3_header_decompress,
.codec_ids = codec_ids,
};

+ 64
- 67
libavcodec/mpeg4_unpack_bframes_bsf.c View File

@@ -20,12 +20,12 @@
*/

#include "avcodec.h"
#include "bsf.h"
#include "mpeg4video.h"

typedef struct UnpackBFramesBSFContext {
uint8_t *b_frame_buf;
int b_frame_buf_size;
int updated_extradata;
} UnpackBFramesBSFContext;

/* search next start code */
@@ -83,112 +83,109 @@ static uint8_t *create_new_buffer(const uint8_t *src, int size) {
return dst;
}

static int mpeg4_unpack_bframes_filter(AVBitStreamFilterContext *bsfc,
AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size,
int keyframe)
static int mpeg4_unpack_bframes_filter(AVBSFContext *ctx, AVPacket *out)
{
UnpackBFramesBSFContext *ctx = bsfc->priv_data;
UnpackBFramesBSFContext *s = ctx->priv_data;
int pos_p = -1, nb_vop = 0, pos_vop2 = -1, ret = 0;
AVPacket *in;

if (avctx->codec_id != AV_CODEC_ID_MPEG4) {
av_log(avctx, AV_LOG_ERROR,
"The mpeg4_unpack_bframes bitstream filter is only useful for mpeg4.\n");
return AVERROR(EINVAL);
}

if (!ctx->updated_extradata && avctx->extradata) {
int pos_p_ext = -1;
scan_buffer(avctx->extradata, avctx->extradata_size, &pos_p_ext, NULL, NULL);
if (pos_p_ext >= 0) {
av_log(avctx, AV_LOG_DEBUG,
"Updating DivX userdata (remove trailing 'p') in extradata.\n");
avctx->extradata[pos_p_ext] = '\0';
}
ctx->updated_extradata = 1;
}
ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

scan_buffer(buf, buf_size, &pos_p, &nb_vop, &pos_vop2);
av_log(avctx, AV_LOG_DEBUG, "Found %d VOP startcode(s) in this packet.\n", nb_vop);
scan_buffer(in->data, in->size, &pos_p, &nb_vop, &pos_vop2);
av_log(ctx, AV_LOG_DEBUG, "Found %d VOP startcode(s) in this packet.\n", nb_vop);

if (pos_vop2 >= 0) {
if (ctx->b_frame_buf) {
av_log(avctx, AV_LOG_WARNING,
if (s->b_frame_buf) {
av_log(ctx, AV_LOG_WARNING,
"Missing one N-VOP packet, discarding one B-frame.\n");
av_freep(&ctx->b_frame_buf);
ctx->b_frame_buf_size = 0;
av_freep(&s->b_frame_buf);
s->b_frame_buf_size = 0;
}
/* store the packed B-frame in the BSFContext */
ctx->b_frame_buf_size = buf_size - pos_vop2;
ctx->b_frame_buf = create_new_buffer(buf + pos_vop2, ctx->b_frame_buf_size);
if (!ctx->b_frame_buf) {
ctx->b_frame_buf_size = 0;
s->b_frame_buf_size = in->size - pos_vop2;
s->b_frame_buf = create_new_buffer(in->data + pos_vop2, s->b_frame_buf_size);
if (!s->b_frame_buf) {
s->b_frame_buf_size = 0;
av_packet_free(&in);
return AVERROR(ENOMEM);
}
}

if (nb_vop > 2) {
av_log(avctx, AV_LOG_WARNING,
av_log(ctx, AV_LOG_WARNING,
"Found %d VOP headers in one packet, only unpacking one.\n", nb_vop);
}

if (nb_vop == 1 && ctx->b_frame_buf) {
if (nb_vop == 1 && s->b_frame_buf) {
/* use frame from BSFContext */
*poutbuf = ctx->b_frame_buf;
*poutbuf_size = ctx->b_frame_buf_size;
/* the output buffer is distinct from the input buffer */
ret = 1;
if (buf_size <= MAX_NVOP_SIZE) {
av_packet_from_data(out, s->b_frame_buf, s->b_frame_buf_size);
if (in->size <= MAX_NVOP_SIZE) {
/* N-VOP */
av_log(avctx, AV_LOG_DEBUG, "Skipping N-VOP.\n");
ctx->b_frame_buf = NULL;
ctx->b_frame_buf_size = 0;
av_log(ctx, AV_LOG_DEBUG, "Skipping N-VOP.\n");
s->b_frame_buf = NULL;
s->b_frame_buf_size = 0;
} else {
/* copy packet into BSFContext */
ctx->b_frame_buf_size = buf_size;
ctx->b_frame_buf = create_new_buffer(buf , buf_size);
if (!ctx->b_frame_buf) {
ctx->b_frame_buf_size = 0;
av_freep(poutbuf);
*poutbuf_size = 0;
s->b_frame_buf_size = in->size;
s->b_frame_buf = create_new_buffer(in->data, in->size);
if (!s->b_frame_buf) {
s->b_frame_buf_size = 0;
av_packet_unref(out);
av_packet_free(&in);
return AVERROR(ENOMEM);
}
}
} else if (nb_vop >= 2) {
/* use first frame of the packet */
*poutbuf = (uint8_t *) buf;
*poutbuf_size = pos_vop2;
av_packet_move_ref(out, in);
out->size = pos_vop2;
} else if (pos_p >= 0) {
av_log(avctx, AV_LOG_DEBUG, "Updating DivX userdata (remove trailing 'p').\n");
*poutbuf_size = buf_size;
*poutbuf = create_new_buffer(buf, buf_size);
if (!*poutbuf) {
*poutbuf_size = 0;
return AVERROR(ENOMEM);
}
av_log(ctx, AV_LOG_DEBUG, "Updating DivX userdata (remove trailing 'p').\n");
av_packet_move_ref(out, in);
/* remove 'p' (packed) from the end of the (DivX) userdata string */
(*poutbuf)[pos_p] = '\0';
/* the output buffer is distinct from the input buffer */
ret = 1;
out->data[pos_p] = '\0';
} else {
/* copy packet */
*poutbuf = (uint8_t *) buf;
*poutbuf_size = buf_size;
av_packet_move_ref(out, in);
}

av_packet_free(&in);

return 0;
}

static int mpeg4_unpack_bframes_init(AVBSFContext *ctx)
{
if (ctx->par_in->extradata) {
int pos_p_ext = -1;
scan_buffer(ctx->par_in->extradata, ctx->par_in->extradata_size, &pos_p_ext, NULL, NULL);
if (pos_p_ext >= 0) {
av_log(ctx, AV_LOG_DEBUG,
"Updating DivX userdata (remove trailing 'p') in extradata.\n");
ctx->par_out->extradata[pos_p_ext] = '\0';
}
}

return ret;
return 0;
}

static void mpeg4_unpack_bframes_close(AVBitStreamFilterContext *bsfc)
static void mpeg4_unpack_bframes_close(AVBSFContext *bsfc)
{
UnpackBFramesBSFContext *ctx = bsfc->priv_data;
av_freep(&ctx->b_frame_buf);
}

AVBitStreamFilter ff_mpeg4_unpack_bframes_bsf = {
static const enum AVCodecID codec_ids[] = {
AV_CODEC_ID_MPEG4, AV_CODEC_ID_NONE,
};

const AVBitStreamFilter ff_mpeg4_unpack_bframes_bsf = {
.name = "mpeg4_unpack_bframes",
.priv_data_size = sizeof(UnpackBFramesBSFContext),
.init = mpeg4_unpack_bframes_init,
.filter = mpeg4_unpack_bframes_filter,
.close = mpeg4_unpack_bframes_close
.close = mpeg4_unpack_bframes_close,
.codec_ids = codec_ids,
};

+ 53
- 17
libavcodec/noise_bsf.c View File

@@ -22,34 +22,70 @@
#include <string.h>

#include "avcodec.h"
#include "bsf.h"

#include "libavutil/log.h"
#include "libavutil/mem.h"
#include "libavutil/opt.h"

typedef struct NoiseContext {
const AVClass *class;
int amount;
unsigned int state;
} NoiseContext;

static int noise(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe){
unsigned int *state= bsfc->priv_data;
int amount= args ? atoi(args) : (*state % 10001+1);
int i;
static int noise(AVBSFContext *ctx, AVPacket *out)
{
NoiseContext *s = ctx->priv_data;
AVPacket *in;
int amount = s->amount > 0 ? s->amount : (s->state % 10001 + 1);
int i, ret = 0;

if(amount <= 0)
if (amount <= 0)
return AVERROR(EINVAL);

*poutbuf= av_malloc(buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
if (!*poutbuf)
return AVERROR(ENOMEM);
ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

ret = av_new_packet(out, in->size);
if (ret < 0)
goto fail;

ret = av_packet_copy_props(out, in);
if (ret < 0)
goto fail;

memcpy(out->data, in->data, in->size);

memcpy(*poutbuf, buf, buf_size + AV_INPUT_BUFFER_PADDING_SIZE);
for(i=0; i<buf_size; i++){
(*state) += (*poutbuf)[i] + 1;
if(*state % amount == 0)
(*poutbuf)[i] = *state;
for (i = 0; i < out->size; i++) {
s->state += out->data[i] + 1;
if (s->state % amount == 0)
out->data[i] = s->state;
}
return 1;
fail:
if (ret < 0)
av_packet_unref(out);
av_packet_free(&in);
return ret;
}

AVBitStreamFilter ff_noise_bsf={
#define OFFSET(x) offsetof(NoiseContext, x)
static const AVOption options[] = {
{ "amount", NULL, OFFSET(amount), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX },
{ NULL },
};

static const AVClass noise_class = {
.class_name = "noise",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};

const AVBitStreamFilter ff_noise_bsf = {
.name = "noise",
.priv_data_size = sizeof(int),
.priv_class = &noise_class,
.filter = noise,
};

+ 85
- 24
libavcodec/remove_extradata_bsf.c View File

@@ -18,38 +18,99 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include "libavutil/log.h"
#include "libavutil/opt.h"

#include "avcodec.h"
#include "bsf.h"

enum RemoveFreq {
REMOVE_FREQ_KEYFRAME,
REMOVE_FREQ_ALL,
};

static int remove_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size, int keyframe){
int cmd= args ? *args : 0;
AVCodecParserContext *s;
typedef struct RemoveExtradataContext {
const AVClass *class;
int freq;

if(!bsfc->parser){
bsfc->parser= av_parser_init(avctx->codec_id);
}
s= bsfc->parser;

if(s && s->parser->split){
if( (((avctx->flags & AV_CODEC_FLAG_GLOBAL_HEADER) ||
(avctx->flags2 & AV_CODEC_FLAG2_LOCAL_HEADER)) && cmd == 'a')
||(!keyframe && cmd=='k')
||(cmd=='e' || !cmd)
){
int i= s->parser->split(avctx, buf, buf_size);
buf += i;
buf_size -= i;
AVCodecParserContext *parser;
AVCodecContext *avctx;
} RemoveExtradataContext;

static int remove_extradata(AVBSFContext *ctx, AVPacket *out)
{
RemoveExtradataContext *s = ctx->priv_data;

AVPacket *in;
int ret;

ret = ff_bsf_get_packet(ctx, &in);
if (ret < 0)
return ret;

if (s->parser && s->parser->parser->split) {
if (s->freq == REMOVE_FREQ_ALL ||
(s->freq == REMOVE_FREQ_KEYFRAME && in->flags & AV_PKT_FLAG_KEY)) {
int i = s->parser->parser->split(s->avctx, in->data, in->size);
in->data += i;
in->size -= i;
}
}
*poutbuf= (uint8_t *) buf;
*poutbuf_size= buf_size;

av_packet_move_ref(out, in);
av_packet_free(&in);

return 0;
}

AVBitStreamFilter ff_remove_extradata_bsf={
.name = "remove_extra",
.filter = remove_extradata,
static int remove_extradata_init(AVBSFContext *ctx)
{
RemoveExtradataContext *s = ctx->priv_data;
int ret;

s->parser = av_parser_init(ctx->par_in->codec_id);

if (s->parser) {
s->avctx = avcodec_alloc_context3(NULL);
if (!s->avctx)
return AVERROR(ENOMEM);

ret = avcodec_parameters_to_context(s->avctx, ctx->par_in);
if (ret < 0)
return ret;
}

return 0;
}

static void remove_extradata_close(AVBSFContext *ctx)
{
RemoveExtradataContext *s = ctx->priv_data;

avcodec_free_context(&s->avctx);
av_parser_close(s->parser);
}

#define OFFSET(x) offsetof(RemoveExtradataContext, x)
static const AVOption options[] = {
{ "freq", NULL, OFFSET(freq), AV_OPT_TYPE_INT, { .i64 = REMOVE_FREQ_KEYFRAME }, REMOVE_FREQ_KEYFRAME, REMOVE_FREQ_ALL, 0, "freq" },
{ "keyframe", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE_FREQ_KEYFRAME }, .unit = "freq" },
{ "all", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = REMOVE_FREQ_ALL }, .unit = "freq" },
{ NULL },
};

static const AVClass remove_extradata_class = {
.class_name = "remove_extradata",
.item_name = av_default_item_name,
.option = options,
.version = LIBAVUTIL_VERSION_INT,
};

const AVBitStreamFilter ff_remove_extradata_bsf = {
.name = "remove_extra",
.priv_data_size = sizeof(RemoveExtradataContext),
.priv_class = &remove_extradata_class,
.init = remove_extradata_init,
.close = remove_extradata_close,
.filter = remove_extradata,
};

+ 5
- 2
libavcodec/version.h View File

@@ -28,8 +28,8 @@
#include "libavutil/version.h"

#define LIBAVCODEC_VERSION_MAJOR 57
#define LIBAVCODEC_VERSION_MINOR 34
#define LIBAVCODEC_VERSION_MICRO 102
#define LIBAVCODEC_VERSION_MINOR 35
#define LIBAVCODEC_VERSION_MICRO 100

#define LIBAVCODEC_VERSION_INT AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \
LIBAVCODEC_VERSION_MINOR, \
@@ -214,5 +214,8 @@
#ifndef FF_API_ASS_TIMING
#define FF_API_ASS_TIMING (LIBAVCODEC_VERSION_MAJOR < 59)
#endif
#ifndef FF_API_OLD_BSF
#define FF_API_OLD_BSF (LIBAVCODEC_VERSION_MAJOR < 59)
#endif

#endif /* AVCODEC_VERSION_H */

+ 68
- 52
libavcodec/vp9_superframe_bsf.c View File

@@ -21,6 +21,7 @@

#include "libavutil/avassert.h"
#include "avcodec.h"
#include "bsf.h"
#include "get_bits.h"

#define MAX_CACHE 8
@@ -50,20 +51,20 @@ static void stats(const struct CachedBuf *in, int n_in,
*_sum = sum;
}

static int merge_superframe(const struct CachedBuf *in, int n_in,
uint8_t **poutbuf, int *poutbuf_size)
static int merge_superframe(const struct CachedBuf *in, int n_in, AVPacket *out)
{
unsigned max, sum, mag, marker, n, sz;
uint8_t *ptr;
int res;

stats(in, n_in, &max, &sum);
mag = av_log2(max) >> 3;
marker = 0xC0 + (mag << 3) + (n_in - 1);
sz = *poutbuf_size = sum + 2 + (mag + 1) * n_in;
ptr = *poutbuf = av_malloc(sz);
if (!ptr)
return AVERROR(ENOMEM);
sz = sum + 2 + (mag + 1) * n_in;
res = av_new_packet(out, sz);
if (res < 0)
return res;
ptr = out->data;
for (n = 0; n < n_in; n++) {
memcpy(ptr, in[n].data, in[n].size);
ptr += in[n].size;
@@ -92,31 +93,32 @@ static int merge_superframe(const struct CachedBuf *in, int n_in,
break;
}
*ptr++ = marker;
av_assert0(ptr == &(*poutbuf)[*poutbuf_size]);
av_assert0(ptr == &out->data[out->size]);

return 0;
}

static int vp9_superframe_filter(AVBitStreamFilterContext *bsfc,
AVCodecContext *avctx, const char *args,
uint8_t **poutbuf, int *poutbuf_size,
const uint8_t *buf, int buf_size,
int keyframe)
static int vp9_superframe_filter(AVBSFContext *ctx, AVPacket *out)
{
GetBitContext gb;
VP9BSFContext *ctx = bsfc->priv_data;
VP9BSFContext *s = ctx->priv_data;
AVPacket *in;
int res, invisible, profile, marker, uses_superframe_syntax = 0, n;

marker = buf[buf_size - 1];
res = ff_bsf_get_packet(ctx, &in);
if (res < 0)
return res;

marker = in->data[in->size - 1];
if ((marker & 0xe0) == 0xc0) {
int nbytes = 1 + ((marker >> 3) & 0x3);
int n_frames = 1 + (marker & 0x7), idx_sz = 2 + n_frames * nbytes;

uses_superframe_syntax = buf_size >= idx_sz && buf[buf_size - idx_sz] == marker;
uses_superframe_syntax = in->size >= idx_sz && in->data[in->size - idx_sz] == marker;
}

if ((res = init_get_bits8(&gb, buf, buf_size)) < 0)
return res;
if ((res = init_get_bits8(&gb, in->data, in->size)) < 0)
goto done;

get_bits(&gb, 2); // frame marker
profile = get_bits1(&gb);
@@ -130,60 +132,74 @@ static int vp9_superframe_filter(AVBitStreamFilterContext *bsfc,
invisible = !get_bits1(&gb);
}

if (uses_superframe_syntax && ctx->n_cache > 0) {
av_log(avctx, AV_LOG_ERROR,
if (uses_superframe_syntax && s->n_cache > 0) {
av_log(ctx, AV_LOG_ERROR,
"Mixing of superframe syntax and naked VP9 frames not supported");
return AVERROR_INVALIDDATA;
} else if ((!invisible || uses_superframe_syntax) && !ctx->n_cache) {
res = AVERROR_INVALIDDATA;
goto done;
} else if ((!invisible || uses_superframe_syntax) && !s->n_cache) {
// passthrough
*poutbuf = (uint8_t *) buf;
*poutbuf_size = buf_size;
return 0;
} else if (ctx->n_cache + 1 >= MAX_CACHE) {
av_log(avctx, AV_LOG_ERROR,
av_packet_move_ref(out, in);
goto done;
} else if (s->n_cache + 1 >= MAX_CACHE) {
av_log(ctx, AV_LOG_ERROR,
"Too many invisible frames");
return AVERROR_INVALIDDATA;
res = AVERROR_INVALIDDATA;
goto done;
}

ctx->cache[ctx->n_cache].size = buf_size;
s->cache[s->n_cache].size = in->size;
if (invisible && !uses_superframe_syntax) {
ctx->cache[ctx->n_cache].data = av_malloc(buf_size);
if (!ctx->cache[ctx->n_cache].data)
return AVERROR(ENOMEM);
memcpy(ctx->cache[ctx->n_cache++].data, buf, buf_size);
*poutbuf = NULL;
*poutbuf_size = 0;
return 0;
s->cache[s->n_cache].data = av_malloc(in->size);
if (!s->cache[s->n_cache].data) {
res = AVERROR(ENOMEM);
goto done;
}
memcpy(s->cache[s->n_cache++].data, in->data, in->size);
res = AVERROR(EAGAIN);
goto done;
}
av_assert0(ctx->n_cache > 0);
av_assert0(s->n_cache > 0);

ctx->cache[ctx->n_cache].data = (uint8_t *) buf;
s->cache[s->n_cache].data = in->data;

// build superframe
if ((res = merge_superframe(ctx->cache, ctx->n_cache + 1,
poutbuf, poutbuf_size)) < 0)
return res;

for (n = 0; n < ctx->n_cache; n++)
av_freep(&ctx->cache[n].data);
ctx->n_cache = 0;

return 0;
if ((res = merge_superframe(s->cache, s->n_cache + 1, out)) < 0)
goto done;

for (n = 0; n < s->n_cache; n++)
av_freep(&s->cache[n].data);
s->n_cache = 0;

res = av_packet_copy_props(out, in);
if (res < 0)
goto done;

done:
if (res < 0)
av_packet_unref(out);
av_packet_free(&in);
return res;
}

static void vp9_superframe_close(AVBitStreamFilterContext *bsfc)
static void vp9_superframe_close(AVBSFContext *ctx)
{
VP9BSFContext *ctx = bsfc->priv_data;
VP9BSFContext *s = ctx->priv_data;
int n;

// free cached data
for (n = 0; n < ctx->n_cache; n++)
av_freep(&ctx->cache[n].data);
for (n = 0; n < s->n_cache; n++)
av_freep(&s->cache[n].data);
}

AVBitStreamFilter ff_vp9_superframe_bsf = {
static const enum AVCodecID codec_ids[] = {
AV_CODEC_ID_VP9, AV_CODEC_ID_NONE,
};

const AVBitStreamFilter ff_vp9_superframe_bsf = {
.name = "vp9_superframe",
.priv_data_size = sizeof(VP9BSFContext),
.filter = vp9_superframe_filter,
.close = vp9_superframe_close,
.codec_ids = codec_ids,
};

+ 6
- 0
libavformat/mux.c View File

@@ -309,6 +309,12 @@ FF_DISABLE_DEPRECATION_WARNINGS
FF_ENABLE_DEPRECATION_WARNINGS
#endif

/* update internal context from codecpar, old bsf api needs this
* FIXME: remove when autobsf uses new bsf API */
ret = avcodec_parameters_to_context(st->internal->avctx, st->codecpar);
if (ret < 0)
goto fail;

if (!st->time_base.num) {
/* fall back on the default timebase values */
if (par->codec_type == AVMEDIA_TYPE_AUDIO && par->sample_rate)


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