Merge remote-tracking branch 'qatar/master'

* qatar/master:
  vsrc_buffer: fix check from 7ae7c41.
  libxvid: Reorder functions to avoid forward declarations; make functions static.
  libxvid: drop some pointless dead code
  wmal: vertical alignment cosmetics
  wmal: Warn about missing bitstream splicing feature and ask for sample.
  wmal: Skip seekable_frame_in_packet.
  wmal: Drop unused variable num_possible_block_size.
  avfiltergraph: make the AVFilterInOut alloc/free API public
  graphparser: allow specifying sws flags in the graph description.
  graphparser: fix the order of connecting unlabeled links.
  graphparser: add avfilter_graph_parse2().
  vsrc_buffer: allow using a NULL buffer to signal EOF.
  swscale: handle last pixel if lines have an odd width.
  qdm2: fix a dubious pointer cast
  WMAL: Do not try to read rawpcm coefficients if bits is invalid
  mov: Fix detecting there is no sync sample.
  tiffdec: K&R cosmetics
  avf: has_duration does not check the global one
  dsputil: fix optimized emu_edge function on Win64.

Conflicts:
	doc/APIchanges
	libavcodec/libxvid_rc.c
	libavcodec/libxvidff.c
	libavcodec/tiff.c
	libavcodec/wmalosslessdec.c
	libavfilter/avfiltergraph.h
	libavfilter/graphparser.c
	libavfilter/version.h
	libavfilter/vsrc_buffer.c
	libswscale/output.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

doc/APIchanges

@@ -19,6 +19,9 @@ API changes, most recent first:
 2012-03-26 - a67d9cf - lavfi 2.66.100
   Add avfilter_fill_frame_from_{audio_,}buffer_ref() functions.
 
+2012-xx-xx - xxxxxxx - lavfi 2.16.0 - avfiltergraph.h
+  Add avfilter_graph_parse2()
+
 2012-xx-xx - xxxxxxx - lavu 51.27.0 - samplefmt.h
   Add av_get_packed_sample_fmt() and av_get_planar_sample_fmt()
 

doc/filters.texi

@@ -76,6 +76,12 @@ In a complete filterchain all the unlabelled filter input and output
 pads must be connected. A filtergraph is considered valid if all the
 filter input and output pads of all the filterchains are connected.
 
+Libavfilter will automatically insert scale filters where format
+conversion is required. It is possible to specify swscale flags
+for those automatically inserted scalers by prepending
+@code{sws_flags=@var{flags};}
+to the filtergraph description.
+
 Follows a BNF description for the filtergraph syntax:
 @example
 @var{NAME}             ::= sequence of alphanumeric characters and '_'
@@ -84,7 +90,7 @@ Follows a BNF description for the filtergraph syntax:
 @var{FILTER_ARGUMENTS} ::= sequence of chars (eventually quoted)
 @var{FILTER}           ::= [@var{LINKNAMES}] @var{NAME} ["=" @var{ARGUMENTS}] [@var{LINKNAMES}]
 @var{FILTERCHAIN}      ::= @var{FILTER} [,@var{FILTERCHAIN}]
-@var{FILTERGRAPH}      ::= @var{FILTERCHAIN} [;@var{FILTERGRAPH}]
+@var{FILTERGRAPH}      ::= [sws_flags=@var{flags};] @var{FILTERCHAIN} [;@var{FILTERGRAPH}]
 @end example
 
 @c man end FILTERGRAPH DESCRIPTION

libavcodec/libxvid_rc.c

@@ -31,16 +31,12 @@
 #undef NDEBUG
 #include <assert.h>
 
-extern unsigned int xvid_debug;
-
 int ff_xvid_rate_control_init(MpegEncContext *s){
     char *tmp_name;
     int fd, i;
     xvid_plg_create_t xvid_plg_create = { 0 };
     xvid_plugin_2pass2_t xvid_2pass2  = { 0 };
 
-//xvid_debug=-1;
-
     fd=av_tempfile("xvidrc.", &tmp_name, 0, s->avctx);
     if (fd == -1) {
         av_log(NULL, AV_LOG_ERROR, "Can't create temporary pass2 file.\n");
@@ -58,7 +54,6 @@ int ff_xvid_rate_control_init(MpegEncContext *s){
             frame_types[rce->pict_type], (int)lrintf(rce->qscale / FF_QP2LAMBDA), rce->i_count, s->mb_num - rce->i_count - rce->skip_count,
             rce->skip_count, (rce->i_tex_bits + rce->p_tex_bits + rce->misc_bits+7)/8, (rce->header_bits+rce->mv_bits+7)/8);
 
-//av_log(NULL, AV_LOG_ERROR, "%s\n", tmp);
         if (write(fd, tmp, strlen(tmp)) < 0) {
             av_log(NULL, AV_LOG_ERROR, "Error %s writing 2pass logfile\n", strerror(errno));
             return AVERROR(errno);

libavcodec/qdm2.c

@@ -140,7 +140,6 @@ typedef struct {
     /// Parameters built from header parameters, do not change during playback
     int group_order;         ///< order of frame group
     int fft_order;           ///< order of FFT (actually fftorder+1)
-    int fft_frame_size;      ///< size of fft frame, in components (1 comples = re + im)
     int frame_size;          ///< size of data frame
     int frequency_range;
     int sub_sampling;        ///< subsampling: 0=25%, 1=50%, 2=100% */
@@ -1607,13 +1606,17 @@ static void qdm2_fft_tone_synthesizer (QDM2Context *q, int sub_packet)
 static void qdm2_calculate_fft (QDM2Context *q, int channel, int sub_packet)
 {
     const float gain = (q->channels == 1 && q->nb_channels == 2) ? 0.5f : 1.0f;
+    float *out = q->output_buffer + channel;
     int i;
     q->fft.complex[channel][0].re *= 2.0f;
     q->fft.complex[channel][0].im = 0.0f;
     q->rdft_ctx.rdft_calc(&q->rdft_ctx, (FFTSample *)q->fft.complex[channel]);
     /* add samples to output buffer */
-    for (i = 0; i < ((q->fft_frame_size + 15) & ~15); i++)
-        q->output_buffer[q->channels * i + channel] += ((float *) q->fft.complex[channel])[i] * gain;
+    for (i = 0; i < FFALIGN(q->fft_size, 8); i++) {
+        out[0]           += q->fft.complex[channel][i].re * gain;
+        out[q->channels] += q->fft.complex[channel][i].im * gain;
+        out += 2 * q->channels;
+    }
 }
 
 
@@ -1688,7 +1691,6 @@ static void dump_context(QDM2Context *q)
     PRINT("checksum_size",q->checksum_size);
     PRINT("channels",q->channels);
     PRINT("nb_channels",q->nb_channels);
-    PRINT("fft_frame_size",q->fft_frame_size);
     PRINT("fft_size",q->fft_size);
     PRINT("sub_sampling",q->sub_sampling);
     PRINT("fft_order",q->fft_order);
@@ -1843,7 +1845,6 @@ static av_cold int qdm2_decode_init(AVCodecContext *avctx)
     }
 
     s->fft_order = av_log2(s->fft_size) + 1;
-    s->fft_frame_size = 2 * s->fft_size; // complex has two floats
 
     // something like max decodable tones
     s->group_order = av_log2(s->group_size) + 1;

libavcodec/tiff.c

@@ -52,35 +52,39 @@ typedef struct TiffContext {
 
     int strips, rps, sstype;
     int sot;
-    const uint8_t* stripdata;
-    const uint8_t* stripsizes;
+    const uint8_t *stripdata;
+    const uint8_t *stripsizes;
     int stripsize, stripoff;
     LZWState *lzw;
 } TiffContext;
 
-static unsigned tget_short(const uint8_t **p, int le) {
+static unsigned tget_short(const uint8_t **p, int le)
+{
     unsigned v = le ? AV_RL16(*p) : AV_RB16(*p);
     *p += 2;
     return v;
 }
 
-static unsigned tget_long(const uint8_t **p, int le) {
+static unsigned tget_long(const uint8_t **p, int le)
+{
     unsigned v = le ? AV_RL32(*p) : AV_RB32(*p);
     *p += 4;
     return v;
 }
 
-static unsigned tget(const uint8_t **p, int type, int le) {
-    switch(type){
+static unsigned tget(const uint8_t **p, int type, int le)
+{
+    switch (type) {
     case TIFF_BYTE : return *(*p)++;
     case TIFF_SHORT: return tget_short(p, le);
-    case TIFF_LONG : return tget_long (p, le);
+    case TIFF_LONG : return tget_long(p, le);
     default        : return UINT_MAX;
     }
 }
 
 #if CONFIG_ZLIB
-static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src, int size)
+static int tiff_uncompress(uint8_t *dst, unsigned long *len, const uint8_t *src,
+                           int size)
 {
     z_stream zstream = { 0 };
     int zret;
@@ -141,7 +145,9 @@ static void av_always_inline horizontal_fill(unsigned int bpp, uint8_t* dst,
     }
 }
 
-static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uint8_t *src, int size, int lines){
+static int tiff_unpack_strip(TiffContext *s, uint8_t *dst, int stride,
+                             const uint8_t *src, int size, int lines)
+{
     int c, line, pixels, code;
     const uint8_t *ssrc = src;
     int width = ((s->width * s->bpp) + 7) >> 3;
@@ -150,21 +156,24 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uin
         return AVERROR_INVALIDDATA;
 
 #if CONFIG_ZLIB
-    if(s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE){
-        uint8_t *zbuf; unsigned long outlen;
+    if (s->compr == TIFF_DEFLATE || s->compr == TIFF_ADOBE_DEFLATE) {
+        uint8_t *zbuf;
+        unsigned long outlen;
         int ret;
         outlen = width * lines;
         zbuf = av_malloc(outlen);
         if (!zbuf)
             return AVERROR(ENOMEM);
         ret = tiff_uncompress(zbuf, &outlen, src, size);
-        if(ret != Z_OK){
-            av_log(s->avctx, AV_LOG_ERROR, "Uncompressing failed (%lu of %lu) with error %d\n", outlen, (unsigned long)width * lines, ret);
+        if (ret != Z_OK) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "Uncompressing failed (%lu of %lu) with error %d\n", outlen,
+                   (unsigned long)width * lines, ret);
             av_free(zbuf);
             return -1;
         }
         src = zbuf;
-        for(line = 0; line < lines; line++){
+        for (line = 0; line < lines; line++) {
             if(s->bpp < 8 && s->avctx->pix_fmt == PIX_FMT_PAL8){
                 horizontal_fill(s->bpp, dst, 1, src, 0, width, 0);
             }else{
@@ -177,37 +186,42 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uin
         return 0;
     }
 #endif
-    if(s->compr == TIFF_LZW){
-        if(ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF) < 0){
+    if (s->compr == TIFF_LZW) {
+        if (ff_lzw_decode_init(s->lzw, 8, src, size, FF_LZW_TIFF) < 0) {
             av_log(s->avctx, AV_LOG_ERROR, "Error initializing LZW decoder\n");
             return -1;
         }
     }
-    if(s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3 || s->compr == TIFF_G4){
+    if (s->compr == TIFF_CCITT_RLE || s->compr == TIFF_G3
+        || s->compr == TIFF_G4) {
         int i, ret = 0;
-        uint8_t *src2 = av_malloc((unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE);
+        uint8_t *src2 = av_malloc((unsigned)size +
+                                  FF_INPUT_BUFFER_PADDING_SIZE);
 
         if (!src2) {
-            av_log(s->avctx, AV_LOG_ERROR, "Error allocating temporary buffer\n");
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "Error allocating temporary buffer\n");
             return AVERROR(ENOMEM);
         }
-        if(s->fax_opts & 2){
-            av_log(s->avctx, AV_LOG_ERROR, "Uncompressed fax mode is not supported (yet)\n");
+        if (s->fax_opts & 2) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "Uncompressed fax mode is not supported (yet)\n");
             av_free(src2);
             return -1;
         }
-        if(!s->fill_order){
+        if (!s->fill_order) {
             memcpy(src2, src, size);
-        }else{
-            for(i = 0; i < size; i++)
+        } else {
+            for (i = 0; i < size; i++)
                 src2[i] = av_reverse[src[i]];
         }
-        memset(src2+size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
-        switch(s->compr){
+        memset(src2 + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
+        switch (s->compr) {
         case TIFF_CCITT_RLE:
         case TIFF_G3:
         case TIFF_G4:
-            ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride, s->compr, s->fax_opts);
+            ret = ff_ccitt_unpack(s->avctx, src2, size, dst, lines, stride,
+                                  s->compr, s->fax_opts);
             break;
         }
         if (s->bpp < 8 && s->avctx->pix_fmt == PIX_FMT_PAL8)
@@ -218,12 +232,12 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uin
         av_free(src2);
         return ret;
     }
-    for(line = 0; line < lines; line++){
-        if(src - ssrc > size){
+    for (line = 0; line < lines; line++) {
+        if (src - ssrc > size) {
             av_log(s->avctx, AV_LOG_ERROR, "Source data overread\n");
             return -1;
         }
-        switch(s->compr){
+        switch (s->compr) {
         case TIFF_RAW:
             if (ssrc + size - src < width)
                 return AVERROR_INVALIDDATA;
@@ -238,22 +252,24 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uin
             src += width;
             break;
         case TIFF_PACKBITS:
-            for(pixels = 0; pixels < width;){
-                code = (int8_t)*src++;
-                if(code >= 0){
+            for (pixels = 0; pixels < width;) {
+                code = (int8_t) * src++;
+                if (code >= 0) {
                     code++;
-                    if(pixels + code > width){
-                        av_log(s->avctx, AV_LOG_ERROR, "Copy went out of bounds\n");
+                    if (pixels + code > width) {
+                        av_log(s->avctx, AV_LOG_ERROR,
+                               "Copy went out of bounds\n");
                         return -1;
                     }
                     horizontal_fill(s->bpp * (s->avctx->pix_fmt == PIX_FMT_PAL8),
                                     dst, 1, src, 0, code, pixels);
                     src += code;
                     pixels += code;
-                }else if(code != -128){ // -127..-1
+                } else if (code != -128) { // -127..-1
                     code = (-code) + 1;
-                    if(pixels + code > width){
-                        av_log(s->avctx, AV_LOG_ERROR, "Run went out of bounds\n");
+                    if (pixels + code > width) {
+                        av_log(s->avctx, AV_LOG_ERROR,
+                               "Run went out of bounds\n");
                         return -1;
                     }
                     c = *src++;
@@ -265,8 +281,9 @@ static int tiff_unpack_strip(TiffContext *s, uint8_t* dst, int stride, const uin
             break;
         case TIFF_LZW:
             pixels = ff_lzw_decode(s->lzw, dst, width);
-            if(pixels < width){
-                av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n", pixels, width);
+            if (pixels < width) {
+                av_log(s->avctx, AV_LOG_ERROR, "Decoded only %i bytes of %i\n",
+                       pixels, width);
                 return -1;
             }
             if (s->bpp < 8 && s->avctx->pix_fmt == PIX_FMT_PAL8)
@@ -342,7 +359,8 @@ static int init_image(TiffContext *s)
     return 0;
 }
 
-static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *buf, const uint8_t *end_buf)
+static int tiff_decode_tag(TiffContext *s, const uint8_t *start,
+                           const uint8_t *buf, const uint8_t *end_buf)
 {
     unsigned tag, type, count, off, value = 0;
     int i, j;
@@ -357,12 +375,13 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
     off = tget_long(&buf, s->le);
 
     if (type == 0 || type >= FF_ARRAY_ELEMS(type_sizes)) {
-        av_log(s->avctx, AV_LOG_DEBUG, "Unknown tiff type (%u) encountered\n", type);
+        av_log(s->avctx, AV_LOG_DEBUG, "Unknown tiff type (%u) encountered\n",
+               type);
         return 0;
     }
 
-    if(count == 1){
-        switch(type){
+    if (count == 1) {
+        switch (type) {
         case TIFF_BYTE:
         case TIFF_SHORT:
             buf -= 4;
@@ -374,7 +393,7 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
             buf = NULL;
             break;
         case TIFF_STRING:
-            if(count <= 4){
+            if (count <= 4) {
                 buf -= 4;
                 break;
             }
@@ -390,12 +409,13 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
         }
     }
 
-    if(buf && (buf < start || buf > end_buf)){
-        av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n");
+    if (buf && (buf < start || buf > end_buf)) {
+        av_log(s->avctx, AV_LOG_ERROR,
+               "Tag referencing position outside the image\n");
         return -1;
     }
 
-    switch(tag){
+    switch (tag) {
     case TIFF_WIDTH:
         s->width = value;
         break;
@@ -404,20 +424,25 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
         break;
     case TIFF_BPP:
         s->bppcount = count;
-        if(count > 4){
-            av_log(s->avctx, AV_LOG_ERROR, "This format is not supported (bpp=%d, %d components)\n", s->bpp, count);
+        if (count > 4) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "This format is not supported (bpp=%d, %d components)\n",
+                   s->bpp, count);
             return -1;
         }
-        if(count == 1) s->bpp = value;
-        else{
-            switch(type){
+        if (count == 1)
+            s->bpp = value;
+        else {
+            switch (type) {
             case TIFF_BYTE:
-                s->bpp = (off & 0xFF) + ((off >> 8) & 0xFF) + ((off >> 16) & 0xFF) + ((off >> 24) & 0xFF);
+                s->bpp = (off & 0xFF) + ((off >> 8) & 0xFF) +
+                         ((off >> 16) & 0xFF) + ((off >> 24) & 0xFF);
                 break;
             case TIFF_SHORT:
             case TIFF_LONG:
                 s->bpp = 0;
-                for(i = 0; i < count && buf < end_buf; i++) s->bpp += tget(&buf, type, s->le);
+                for (i = 0; i < count && buf < end_buf; i++)
+                    s->bpp += tget(&buf, type, s->le);
                 break;
             default:
                 s->bpp = -1;
@@ -437,7 +462,7 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
     case TIFF_COMPR:
         s->compr = value;
         s->predictor = 0;
-        switch(s->compr){
+        switch (s->compr) {
         case TIFF_RAW:
         case TIFF_PACKBITS:
         case TIFF_LZW:
@@ -457,48 +482,54 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
 #endif
         case TIFF_JPEG:
         case TIFF_NEWJPEG:
-            av_log(s->avctx, AV_LOG_ERROR, "JPEG compression is not supported\n");
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "JPEG compression is not supported\n");
             return -1;
         default:
-            av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n", s->compr);
+            av_log(s->avctx, AV_LOG_ERROR, "Unknown compression method %i\n",
+                   s->compr);
             return -1;
         }
         break;
     case TIFF_ROWSPERSTRIP:
         if (type == TIFF_LONG && value == UINT_MAX)
             value = s->avctx->height;
-        if(value < 1){
-            av_log(s->avctx, AV_LOG_ERROR, "Incorrect value of rows per strip\n");
+        if (value < 1) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "Incorrect value of rows per strip\n");
             return -1;
         }
         s->rps = value;
         break;
     case TIFF_STRIP_OFFS:
-        if(count == 1){
+        if (count == 1) {
             s->stripdata = NULL;
             s->stripoff = value;
-        }else
+        } else
             s->stripdata = start + off;
         s->strips = count;
-        if(s->strips == 1) s->rps = s->height;
+        if (s->strips == 1)
+            s->rps = s->height;
         s->sot = type;
-        if(s->stripdata > end_buf){
-            av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n");
+        if (s->stripdata > end_buf) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "Tag referencing position outside the image\n");
             return -1;
         }
         break;
     case TIFF_STRIP_SIZE:
-        if(count == 1){
+        if (count == 1) {
             s->stripsizes = NULL;
             s->stripsize = value;
             s->strips = 1;
-        }else{
+        } else {
             s->stripsizes = start + off;
         }
         s->strips = count;
         s->sstype = type;
-        if(s->stripsizes > end_buf){
-            av_log(s->avctx, AV_LOG_ERROR, "Tag referencing position outside the image\n");
+        if (s->stripsizes > end_buf) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "Tag referencing position outside the image\n");
             return -1;
         }
         break;
@@ -513,7 +544,7 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
         s->predictor = value;
         break;
     case TIFF_INVERT:
-        switch(value){
+        switch (value) {
         case 0:
             s->invert = 1;
             break;
@@ -524,13 +555,15 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
         case 3:
             break;
         default:
-            av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n", value);
+            av_log(s->avctx, AV_LOG_ERROR, "Color mode %d is not supported\n",
+                   value);
             return -1;
         }
         break;
     case TIFF_FILL_ORDER:
-        if(value < 1 || value > 2){
-            av_log(s->avctx, AV_LOG_ERROR, "Unknown FillOrder value %d, trying default one\n", value);
+        if (value < 1 || value > 2) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "Unknown FillOrder value %d, trying default one\n", value);
             value = 1;
         }
         s->fill_order = value - 1;
@@ -544,44 +577,44 @@ static int tiff_decode_tag(TiffContext *s, const uint8_t *start, const uint8_t *
         gp = buf + count / 3 * off;
         bp = buf + count / 3 * off * 2;
         off = (type_sizes[type] - 1) << 3;
-        for(i = 0; i < count / 3; i++){
+        for (i = 0; i < count / 3; i++) {
             j = 0xff << 24;
             j |= (tget(&rp, type, s->le) >> off) << 16;
             j |= (tget(&gp, type, s->le) >> off) << 8;
-            j |= tget(&bp, type, s->le) >> off;
+            j |=  tget(&bp, type, s->le) >> off;
             pal[i] = j;
         }
         s->palette_is_set = 1;
         break;
     case TIFF_PLANAR:
-        if(value == 2){
+        if (value == 2) {
             av_log(s->avctx, AV_LOG_ERROR, "Planar format is not supported\n");
             return -1;
         }
         break;
     case TIFF_T4OPTIONS:
-        if(s->compr == TIFF_G3)
+        if (s->compr == TIFF_G3)
             s->fax_opts = value;
         break;
     case TIFF_T6OPTIONS:
-        if(s->compr == TIFF_G4)
+        if (s->compr == TIFF_G4)
             s->fax_opts = value;
         break;
     default:
-        av_log(s->avctx, AV_LOG_DEBUG, "Unknown or unsupported tag %d/0X%0X\n", tag, tag);
+        av_log(s->avctx, AV_LOG_DEBUG, "Unknown or unsupported tag %d/0X%0X\n",
+               tag, tag);
     }
     return 0;
 }
 
 static int decode_frame(AVCodecContext *avctx,
-                        void *data, int *data_size,
-                        AVPacket *avpkt)
+                        void *data, int *data_size, AVPacket *avpkt)
 {
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
-    TiffContext * const s = avctx->priv_data;
+    TiffContext *const s = avctx->priv_data;
     AVFrame *picture = data;
-    AVFrame * const p = &s->picture;
+    AVFrame *const p = &s->picture;
     const uint8_t *orig_buf = buf, *end_buf = buf + buf_size;
     unsigned off;
     int id, le, ret;
@@ -593,10 +626,13 @@ static int decode_frame(AVCodecContext *avctx,
     //parse image header
     if (end_buf - buf < 8)
         return AVERROR_INVALIDDATA;
-    id = AV_RL16(buf); buf += 2;
-    if(id == 0x4949) le = 1;
-    else if(id == 0x4D4D) le = 0;
-    else{
+    id = AV_RL16(buf);
+    buf += 2;
+    if (id == 0x4949)
+        le = 1;
+    else if (id == 0x4D4D)
+        le = 0;
+    else {
         av_log(avctx, AV_LOG_ERROR, "TIFF header not found\n");
         return -1;
     }
@@ -606,8 +642,9 @@ static int decode_frame(AVCodecContext *avctx,
     s->fill_order = 0;
     // As TIFF 6.0 specification puts it "An arbitrary but carefully chosen number
     // that further identifies the file as a TIFF file"
-    if(tget_short(&buf, le) != 42){
-        av_log(avctx, AV_LOG_ERROR, "The answer to life, universe and everything is not correct!\n");
+    if (tget_short(&buf, le) != 42) {
+        av_log(avctx, AV_LOG_ERROR,
+               "The answer to life, universe and everything is not correct!\n");
         return -1;
     }
     // Reset these pointers so we can tell if they were set this frame
@@ -620,12 +657,12 @@ static int decode_frame(AVCodecContext *avctx,
     }
     buf = orig_buf + off;
     entries = tget_short(&buf, le);
-    for(i = 0; i < entries; i++){
-        if(tiff_decode_tag(s, orig_buf, buf, end_buf) < 0)
+    for (i = 0; i < entries; i++) {
+        if (tiff_decode_tag(s, orig_buf, buf, end_buf) < 0)
             return -1;
         buf += 12;
     }
-    if(!s->stripdata && !s->stripoff){
+    if (!s->stripdata && !s->stripoff) {
         av_log(avctx, AV_LOG_ERROR, "Image data is missing\n");
         return -1;
     }
@@ -633,36 +670,37 @@ static int decode_frame(AVCodecContext *avctx,
     if ((ret = init_image(s)) < 0)
         return ret;
 
-    if(s->strips == 1 && !s->stripsize){
+    if (s->strips == 1 && !s->stripsize) {
         av_log(avctx, AV_LOG_WARNING, "Image data size missing\n");
         s->stripsize = buf_size - s->stripoff;
     }
     stride = p->linesize[0];
     dst = p->data[0];
-    for(i = 0; i < s->height; i += s->rps){
-        if(s->stripsizes) {
+    for (i = 0; i < s->height; i += s->rps) {
+        if (s->stripsizes) {
             if (s->stripsizes >= end_buf)
                 return AVERROR_INVALIDDATA;
             ssize = tget(&s->stripsizes, s->sstype, s->le);
         } else
             ssize = s->stripsize;
 
-        if(s->stripdata){
+        if (s->stripdata) {
             if (s->stripdata >= end_buf)
                 return AVERROR_INVALIDDATA;
             soff = tget(&s->stripdata, s->sot, s->le);
-        }else
+        } else
             soff = s->stripoff;
 
         if (soff > buf_size || ssize > buf_size - soff) {
             av_log(avctx, AV_LOG_ERROR, "Invalid strip size/offset\n");
             return -1;
         }
-        if(tiff_unpack_strip(s, dst, stride, orig_buf + soff, ssize, FFMIN(s->rps, s->height - i)) < 0)
+        if (tiff_unpack_strip(s, dst, stride, orig_buf + soff, ssize,
+                              FFMIN(s->rps, s->height - i)) < 0)
             break;
         dst += s->rps * stride;
     }
-    if(s->predictor == 2){
+    if (s->predictor == 2) {
         dst = p->data[0];
         soff = s->bpp >> 3;
         ssize = s->width * soff;
@@ -681,18 +719,18 @@ static int decode_frame(AVCodecContext *avctx,
                 dst += stride;
             }
         } else {
-            for(i = 0; i < s->height; i++) {
-                for(j = soff; j < ssize; j++)
+            for (i = 0; i < s->height; i++) {
+                for (j = soff; j < ssize; j++)
                     dst[j] += dst[j - soff];
                 dst += stride;
             }
         }
     }
 
-    if(s->invert){
+    if (s->invert) {
         dst = s->picture.data[0];
-        for(i = 0; i < s->height; i++){
-            for(j = 0; j < s->picture.linesize[0]; j++)
+        for (i = 0; i < s->height; i++) {
+            for (j = 0; j < s->picture.linesize[0]; j++)
                 dst[j] = (s->avctx->pix_fmt == PIX_FMT_PAL8 ? (1<<s->bpp) - 1 : 255) - dst[j];
             dst += s->picture.linesize[0];
         }
@@ -703,7 +741,8 @@ static int decode_frame(AVCodecContext *avctx,
     return buf_size;
 }
 
-static av_cold int tiff_init(AVCodecContext *avctx){
+static av_cold int tiff_init(AVCodecContext *avctx)
+{
     TiffContext *s = avctx->priv_data;
 
     s->width = 0;
@@ -719,10 +758,10 @@ static av_cold int tiff_init(AVCodecContext *avctx){
 
 static av_cold int tiff_end(AVCodecContext *avctx)
 {
-    TiffContext * const s = avctx->priv_data;
+    TiffContext *const s = avctx->priv_data;
 
     ff_lzw_decode_close(&s->lzw);
-    if(s->picture.data[0])
+    if (s->picture.data[0])
         avctx->release_buffer(avctx, &s->picture);
     return 0;
 }

libavcodec/wmalosslessdec.c

@@ -229,7 +229,6 @@ static av_cold int decode_init(AVCodecContext *avctx)
     s->max_subframe_len_bit = 0;
     s->subframe_len_bits    = av_log2(log2_max_num_subframes) + 1;
 
-    num_possible_block_sizes     = log2_max_num_subframes + 1;
     s->min_samples_per_subframe  = s->samples_per_frame / s->max_num_subframes;
     s->dynamic_range_compression = s->decode_flags & 0x80;
     s->bV3RTM                    = s->decode_flags & 0x100;
@@ -940,9 +939,10 @@ static int decode_subframe(WmallDecodeCtx *s)
 
     if (rawpcm_tile) {
         int bits = s->bits_per_sample - padding_zeroes;
-        if (bits <= 0 ) {
-            av_log(s->avctx, AV_LOG_ERROR, "rawpcm_tile bits invalid\n");
-            return -1;
+        if (bits <= 0) {
+            av_log(s->avctx, AV_LOG_ERROR,
+                   "Invalid number of padding bits in raw PCM tile\n");
+            return AVERROR_INVALIDDATA;
         }
         av_dlog(s->avctx, "RAWPCM %d bits per sample. "
                 "total %d bits, remain=%d\n", bits,
@@ -1169,8 +1169,7 @@ static int decode_packet(AVCodecContext *avctx, void *data, int *got_frame_ptr,
     GetBitContext* gb  = &s->pgb;
     const uint8_t* buf = avpkt->data;
     int buf_size       = avpkt->size;
-    int num_bits_prev_frame, packet_sequence_number,
-        seekable_frame_in_packet, spliced_packet;
+    int num_bits_prev_frame, packet_sequence_number, spliced_packet;
 
     if (s->packet_done || s->packet_loss) {
         s->packet_done = 0;
@@ -1185,9 +1184,11 @@ static int decode_packet(AVCodecContext *avctx, void *data, int *got_frame_ptr,
 
         /* parse packet header */
         init_get_bits(gb, buf, s->buf_bit_size);
-        packet_sequence_number   = get_bits(gb, 4);
-        seekable_frame_in_packet = get_bits1(gb);
-        spliced_packet           = get_bits1(gb);
+        packet_sequence_number = get_bits(gb, 4);
+        skip_bits(gb, 1);   // Skip seekable_frame_in_packet, currently ununused
+        spliced_packet = get_bits1(gb);
+        if (spliced_packet)
+            av_log_missing_feature(avctx, "Bitstream splicing", 1);
 
         /* get number of bits that need to be added to the previous frame */
         num_bits_prev_frame = get_bits(gb, s->log2_frame_size);

libavcodec/x86/dsputil_yasm.asm

@@ -594,7 +594,7 @@ cglobal emu_edge_core, 2, 7, 0
 %define valw2 r7w
 %define valw3 r3w
 %if WIN64
-%define valw4 r4w
+%define valw4 r7w
 %else ; unix64
 %define valw4 r3w
 %endif

libavfilter/avfiltergraph.h

@@ -91,11 +91,11 @@ void avfilter_graph_free(AVFilterGraph **graph);
 /**
  * A linked-list of the inputs/outputs of the filter chain.
  *
- * This is mainly useful for avfilter_graph_parse(), since this
- * function may accept a description of a graph with not connected
- * input/output pads. This struct specifies, per each not connected
- * pad contained in the graph, the filter context and the pad index
- * required for establishing a link.
+ * This is mainly useful for avfilter_graph_parse() / avfilter_graph_parse2(),
+ * where it is used to communicate open (unlinked) inputs and outputs from and
+ * to the caller.
+ * This struct specifies, per each not connected pad contained in the graph, the
+ * filter context and the pad index required for establishing a link.
  */
 typedef struct AVFilterInOut {
     /** unique name for this input/output in the list */
@@ -112,13 +112,14 @@ typedef struct AVFilterInOut {
 } AVFilterInOut;
 
 /**
- * Create an AVFilterInOut.
- * Must be free with avfilter_inout_free().
+ * Allocate a single AVFilterInOut entry.
+ * Must be freed with avfilter_inout_free().
+ * @return allocated AVFilterInOut on success, NULL on failure.
  */
 AVFilterInOut *avfilter_inout_alloc(void);
 
 /**
- * Free the AVFilterInOut in *inout, and set its pointer to NULL.
+ * Free the supplied list of AVFilterInOut and set *inout to NULL.
  * If *inout is NULL, do nothing.
  */
 void avfilter_inout_free(AVFilterInOut **inout);
@@ -140,6 +141,41 @@ int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
                          AVFilterInOut **inputs, AVFilterInOut **outputs,
                          void *log_ctx);
 
+/**
+ * Add a graph described by a string to a graph.
+ *
+ * @param[in]  graph   the filter graph where to link the parsed graph context
+ * @param[in]  filters string to be parsed
+ * @param[out] inputs  a linked list of all free (unlinked) inputs of the
+ *                     parsed graph will be returned here. It is to be freed
+ *                     by the caller using avfilter_inout_free().
+ * @param[out] outputs a linked list of all free (unlinked) outputs of the
+ *                     parsed graph will be returned here. It is to be freed by the
+ *                     caller using avfilter_inout_free().
+ * @return zero on success, a negative AVERROR code on error
+ *
+ * @note the difference between avfilter_graph_parse2() and
+ * avfilter_graph_parse() is that in avfilter_graph_parse(), the caller provides
+ * the lists of inputs and outputs, which therefore must be known before calling
+ * the function. On the other hand, avfilter_graph_parse2() \em returns the
+ * inputs and outputs that are left unlinked after parsing the graph and the
+ * caller then deals with them. Another difference is that in
+ * avfilter_graph_parse(), the inputs parameter describes inputs of the
+ * <em>already existing</em> part of the graph; i.e. from the point of view of
+ * the newly created part, they are outputs. Similarly the outputs parameter
+ * describes outputs of the already existing filters, which are provided as
+ * inputs to the parsed filters.
+ * avfilter_graph_parse2() takes the opposite approach -- it makes no reference
+ * whatsoever to already existing parts of the graph and the inputs parameter
+ * will on return contain inputs of the newly parsed part of the graph.
+ * Analogously the outputs parameter will contain outputs of the newly created
+ * filters.
+ */
+int avfilter_graph_parse2(AVFilterGraph *graph, const char *filters,
+                          AVFilterInOut **inputs,
+                          AVFilterInOut **outputs);
+
+
 /**
  * Send a command to one or more filter instances.
  *

libavfilter/buffersrc.h

@@ -32,6 +32,7 @@
  *
  * @param buf buffer containing frame data to be passed down the filtergraph.
  * This function will take ownership of buf, the user must not free it.
+ * A NULL buf signals EOF -- i.e. no more frames will be sent to this filter.
  */
 int av_buffersrc_buffer(AVFilterContext *s, AVFilterBufferRef *buf);
 

libavfilter/graphparser.c

@@ -189,13 +189,15 @@ static AVFilterInOut *extract_inout(const char *label, AVFilterInOut **links)
 {
     AVFilterInOut *ret;
 
-    while (*links && strcmp((*links)->name, label))
+    while (*links && (!(*links)->name || strcmp((*links)->name, label)))
         links = &((*links)->next);
 
     ret = *links;
 
-    if (ret)
+    if (ret) {
         *links = ret->next;
+        ret->next = NULL;
+    }
 
     return ret;
 }
@@ -206,22 +208,31 @@ static void insert_inout(AVFilterInOut **inouts, AVFilterInOut *element)
     *inouts = element;
 }
 
+static void append_inout(AVFilterInOut **inouts, AVFilterInOut **element)
+{
+    while (*inouts && (*inouts)->next)
+        inouts = &((*inouts)->next);
+
+    if (!*inouts)
+        *inouts = *element;
+    else
+        (*inouts)->next = *element;
+    *element = NULL;
+}
+
 static int link_filter_inouts(AVFilterContext *filt_ctx,
                               AVFilterInOut **curr_inputs,
                               AVFilterInOut **open_inputs, void *log_ctx)
 {
-    int pad = filt_ctx->input_count, ret;
+    int pad, ret;
 
-    while (pad--) {
+    for (pad = 0; pad < filt_ctx->input_count; pad++) {
         AVFilterInOut *p = *curr_inputs;
-        if (!p) {
-            av_log(log_ctx, AV_LOG_ERROR,
-                   "Not enough inputs specified for the \"%s\" filter.\n",
-                   filt_ctx->filter->name);
-            return AVERROR(EINVAL);
-        }
 
-        *curr_inputs = (*curr_inputs)->next;
+        if (p)
+            *curr_inputs = (*curr_inputs)->next;
+        else if (!(p = av_mallocz(sizeof(*p))))
+            return AVERROR(ENOMEM);
 
         if (p->filter_ctx) {
             if ((ret = link_filter(p->filter_ctx, p->pad_idx, filt_ctx, pad, log_ctx)) < 0)
@@ -258,6 +269,7 @@ static int link_filter_inouts(AVFilterContext *filt_ctx,
 static int parse_inputs(const char **buf, AVFilterInOut **curr_inputs,
                         AVFilterInOut **open_outputs, void *log_ctx)
 {
+    AVFilterInOut *parsed_inputs = NULL;
     int pad = 0;
 
     while (**buf == '[') {
@@ -280,12 +292,15 @@ static int parse_inputs(const char **buf, AVFilterInOut **curr_inputs,
             match->pad_idx = pad;
         }
 
-        insert_inout(curr_inputs, match);
+        append_inout(&parsed_inputs, &match);
 
         *buf += strspn(*buf, WHITESPACES);
         pad++;
     }
 
+    append_inout(&parsed_inputs, curr_inputs);
+    *curr_inputs = parsed_inputs;
+
     return pad;
 }
 
@@ -334,10 +349,173 @@ static int parse_outputs(const char **buf, AVFilterInOut **curr_inputs,
     return pad;
 }
 
+#if FF_API_GRAPH_AVCLASS
+#define log_ctx graph
+#else
+#define log_ctx NULL
+#endif
+
+static int parse_sws_flags(const char **buf, AVFilterGraph *graph)
+{
+    char *p = strchr(*buf, ';');
+
+    if (strncmp(*buf, "sws_flags=", 10))
+        return 0;
+
+    if (!p) {
+        av_log(log_ctx, AV_LOG_ERROR, "sws_flags not terminated with ';'.\n");
+        return AVERROR(EINVAL);
+    }
+
+    *buf += 4;  // keep the 'flags=' part
+
+    av_freep(&graph->scale_sws_opts);
+    if (!(graph->scale_sws_opts = av_mallocz(p - *buf + 1)))
+        return AVERROR(ENOMEM);
+    av_strlcpy(graph->scale_sws_opts, *buf, p - *buf + 1);
+
+    *buf = p + 1;
+    return 0;
+}
+
+int avfilter_graph_parse2(AVFilterGraph *graph, const char *filters,
+                          AVFilterInOut **inputs,
+                          AVFilterInOut **outputs)
+{
+    int index = 0, ret = 0;
+    char chr = 0;
+
+    AVFilterInOut *curr_inputs = NULL, *open_inputs = NULL, *open_outputs = NULL;
+
+    filters += strspn(filters, WHITESPACES);
+
+    if ((ret = parse_sws_flags(&filters, graph)) < 0)
+        goto fail;
+
+    do {
+        AVFilterContext *filter;
+        filters += strspn(filters, WHITESPACES);
+
+        if ((ret = parse_inputs(&filters, &curr_inputs, &open_outputs, log_ctx)) < 0)
+            goto end;
+
+        if ((ret = parse_filter(&filter, &filters, graph, index, log_ctx)) < 0)
+            goto end;
+
+        if ((ret = link_filter_inouts(filter, &curr_inputs, &open_inputs, log_ctx)) < 0)
+            goto end;
+
+        if ((ret = parse_outputs(&filters, &curr_inputs, &open_inputs, &open_outputs,
+                                 log_ctx)) < 0)
+            goto end;
+
+        filters += strspn(filters, WHITESPACES);
+        chr = *filters++;
+
+        if (chr == ';' && curr_inputs)
+            append_inout(&open_outputs, &curr_inputs);
+        index++;
+    } while (chr == ',' || chr == ';');
+
+    if (chr) {
+        av_log(log_ctx, AV_LOG_ERROR,
+               "Unable to parse graph description substring: \"%s\"\n",
+               filters - 1);
+        ret = AVERROR(EINVAL);
+        goto end;
+    }
+
+    append_inout(&open_outputs, &curr_inputs);
+
+
+    *inputs  = open_inputs;
+    *outputs = open_outputs;
+    return 0;
+
+ fail:end:
+    for (; graph->filter_count > 0; graph->filter_count--)
+        avfilter_free(graph->filters[graph->filter_count - 1]);
+    av_freep(&graph->filters);
+    avfilter_inout_free(&open_inputs);
+    avfilter_inout_free(&open_outputs);
+    avfilter_inout_free(&curr_inputs);
+
+    *inputs  = NULL;
+    *outputs = NULL;
+
+    return ret;
+}
+#undef log_ctx
+
 int avfilter_graph_parse(AVFilterGraph *graph, const char *filters,
                          AVFilterInOut **open_inputs_ptr, AVFilterInOut **open_outputs_ptr,
                          void *log_ctx)
 {
+#if 0
+    int ret;
+    AVFilterInOut *open_inputs  = open_inputs_ptr  ? *open_inputs_ptr  : NULL;
+    AVFilterInOut *open_outputs = open_outputs_ptr ? *open_outputs_ptr : NULL;
+    AVFilterInOut *cur, *match, *inputs = NULL, *outputs = NULL;
+
+    if ((ret = avfilter_graph_parse2(graph, filters, &inputs, &outputs)) < 0)
+        goto fail;
+
+    /* First input can be omitted if it is "[in]" */
+    if (inputs && !inputs->name)
+        inputs->name = av_strdup("in");
+    for (cur = inputs; cur; cur = cur->next) {
+        if (!cur->name) {
+              av_log(log_ctx, AV_LOG_ERROR,
+                     "Not enough inputs specified for the \"%s\" filter.\n",
+                     cur->filter_ctx->filter->name);
+              ret = AVERROR(EINVAL);
+              goto fail;
+        }
+        if (!(match = extract_inout(cur->name, &open_outputs)))
+            continue;
+        ret = avfilter_link(match->filter_ctx, match->pad_idx,
+                            cur->filter_ctx,   cur->pad_idx);
+        avfilter_inout_free(&match);
+        if (ret < 0)
+            goto fail;
+    }
+
+    /* Last output can be omitted if it is "[out]" */
+    if (outputs && !outputs->name)
+        outputs->name = av_strdup("out");
+    for (cur = outputs; cur; cur = cur->next) {
+        if (!cur->name) {
+            av_log(log_ctx, AV_LOG_ERROR,
+                   "Invalid filterchain containing an unlabelled output pad: \"%s\"\n",
+                   filters);
+            ret = AVERROR(EINVAL);
+            goto fail;
+        }
+        if (!(match = extract_inout(cur->name, &open_inputs)))
+            continue;
+        ret = avfilter_link(cur->filter_ctx,   cur->pad_idx,
+                            match->filter_ctx, match->pad_idx);
+        avfilter_inout_free(&match);
+        if (ret < 0)
+            goto fail;
+    }
+
+ fail:
+    if (ret < 0) {
+        for (; graph->filter_count > 0; graph->filter_count--)
+            avfilter_free(graph->filters[graph->filter_count - 1]);
+        av_freep(&graph->filters);
+    }
+    avfilter_inout_free(&inputs);
+    avfilter_inout_free(&outputs);
+    /* clear open_in/outputs only if not passed as parameters */
+    if (open_inputs_ptr) *open_inputs_ptr = open_inputs;
+    else avfilter_inout_free(&open_inputs);
+    if (open_outputs_ptr) *open_outputs_ptr = open_outputs;
+    else avfilter_inout_free(&open_outputs);
+    return ret;
+}
+#else
     int index = 0, ret = 0;
     char chr = 0;
 
@@ -414,3 +592,5 @@ end:
     }
     return ret;
 }
+
+#endif

libavfilter/version.h

@@ -29,8 +29,8 @@
 #include "libavutil/avutil.h"
 
 #define LIBAVFILTER_VERSION_MAJOR  2
-#define LIBAVFILTER_VERSION_MINOR 69
-#define LIBAVFILTER_VERSION_MICRO 101
+#define LIBAVFILTER_VERSION_MINOR 70
+#define LIBAVFILTER_VERSION_MICRO 100
 
 #define LIBAVFILTER_VERSION_INT AV_VERSION_INT(LIBAVFILTER_VERSION_MAJOR, \
                                                LIBAVFILTER_VERSION_MINOR, \

libavfilter/vsrc_buffer.c

@@ -39,6 +39,7 @@ typedef struct {
     AVRational        time_base;     ///< time_base to set in the output link
     AVRational        sample_aspect_ratio;
     char              sws_param[256];
+    int eof;
 } BufferSourceContext;
 
 #define CHECK_PARAM_CHANGE(s, c, width, height, format)\
@@ -55,6 +56,12 @@ int av_vsrc_buffer_add_video_buffer_ref(AVFilterContext *buffer_filter,
     AVFilterBufferRef *buf;
     int ret;
 
+    if (!picref) {
+        c->eof = 1;
+        return 0;
+    } else if (c->eof)
+        return AVERROR(EINVAL);
+
     if (!av_fifo_space(c->fifo) &&
         (ret = av_fifo_realloc2(c->fifo, av_fifo_size(c->fifo) +
                                          sizeof(buf))) < 0)
@@ -125,6 +132,12 @@ int av_buffersrc_buffer(AVFilterContext *s, AVFilterBufferRef *buf)
     BufferSourceContext *c = s->priv;
     int ret;
 
+    if (!buf) {
+        c->eof = 1;
+        return 0;
+    } else if (c->eof)
+        return AVERROR(EINVAL);
+
     if (!av_fifo_space(c->fifo) &&
         (ret = av_fifo_realloc2(c->fifo, av_fifo_size(c->fifo) +
                                          sizeof(buf))) < 0)
@@ -144,9 +157,17 @@ int av_buffersrc_buffer(AVFilterContext *s, AVFilterBufferRef *buf)
 int av_vsrc_buffer_add_frame(AVFilterContext *buffer_src,
                              const AVFrame *frame, int flags)
 {
+    BufferSourceContext *c = buffer_src->priv;
+    AVFilterBufferRef *picref;
     int ret;
-    AVFilterBufferRef *picref =
-        avfilter_get_video_buffer_ref_from_frame(frame, AV_PERM_WRITE);
+
+    if (!frame) {
+        c->eof = 1;
+        return 0;
+    } else if (c->eof)
+        return AVERROR(EINVAL);
+
+    picref = avfilter_get_video_buffer_ref_from_frame(frame, AV_PERM_WRITE);
     if (!picref)
         return AVERROR(ENOMEM);
     ret = av_vsrc_buffer_add_video_buffer_ref(buffer_src, picref, flags);
@@ -226,6 +247,8 @@ static int request_frame(AVFilterLink *link)
     AVFilterBufferRef *buf;
 
     if (!av_fifo_size(c->fifo)) {
+        if (c->eof)
+            return AVERROR_EOF;
         av_log(link->src, AV_LOG_WARNING,
                "request_frame() called with no available frame!\n");
         return AVERROR(EINVAL);
@@ -243,7 +266,10 @@ static int request_frame(AVFilterLink *link)
 static int poll_frame(AVFilterLink *link)
 {
     BufferSourceContext *c = link->src->priv;
-    return !!av_fifo_size(c->fifo);
+    int size = av_fifo_size(c->fifo);
+    if (!size && c->eof)
+        return AVERROR_EOF;
+    return size/sizeof(AVFilterBufferRef*);
 }
 
 AVFilter avfilter_vsrc_buffer = {

libavformat/isom.h

@@ -107,6 +107,7 @@ typedef struct MOVStreamContext {
     unsigned int alt_sample_size; ///< always contains sample size from stsz atom
     unsigned int sample_count;
     int *sample_sizes;
+    int keyframe_absent;
     unsigned int keyframe_count;
     int *keyframes;
     int time_scale;

libavformat/mov.c

@@ -1618,7 +1618,10 @@ static int mov_read_stss(MOVContext *c, AVIOContext *pb, MOVAtom atom)
     av_dlog(c->fc, "keyframe_count = %d\n", entries);
 
     if (!entries)
+    {
+        sc->keyframe_absent = 1;
         return 0;
+    }
     if (entries >= UINT_MAX / sizeof(int))
         return AVERROR_INVALIDDATA;
     sc->keyframes = av_malloc(entries * sizeof(int));
@@ -1873,7 +1876,7 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
                     return;
                 }
 
-                if (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index]) {
+                if (!sc->keyframe_absent && (!sc->keyframe_count || current_sample+key_off == sc->keyframes[stss_index])) {
                     keyframe = 1;
                     if (stss_index + 1 < sc->keyframe_count)
                         stss_index++;

libavformat/utils.c

@@ -1975,6 +1975,8 @@ static int has_duration(AVFormatContext *ic)
         if (st->duration != AV_NOPTS_VALUE)
             return 1;
     }
+    if (ic->duration)
+        return 1;
     return 0;
 }
 

libswscale/output.c

@@ -469,7 +469,7 @@ yuv2422_X_c_template(SwsContext *c, const int16_t *lumFilter,
 {
     int i;
 
-    for (i = 0; i < (dstW >> 1); i++) {
+    for (i = 0; i < ((dstW + 1) >> 1); i++) {
         int j;
         int Y1 = 1 << 18;
         int Y2 = 1 << 18;
@@ -512,7 +512,7 @@ yuv2422_2_c_template(SwsContext *c, const int16_t *buf[2],
     int uvalpha1 = 4095 - uvalpha;
     int i;
 
-    for (i = 0; i < (dstW >> 1); i++) {
+    for (i = 0; i < ((dstW + 1) >> 1); i++) {
         int Y1 = (buf0[i * 2]     * yalpha1  + buf1[i * 2]     * yalpha)  >> 19;
         int Y2 = (buf0[i * 2 + 1] * yalpha1  + buf1[i * 2 + 1] * yalpha)  >> 19;
         int U  = (ubuf0[i]        * uvalpha1 + ubuf1[i]        * uvalpha) >> 19;
@@ -539,7 +539,7 @@ yuv2422_1_c_template(SwsContext *c, const int16_t *buf0,
     int i;
 
     if (uvalpha < 2048) {
-        for (i = 0; i < (dstW >> 1); i++) {
+        for (i = 0; i < ((dstW + 1) >> 1); i++) {
             int Y1 = (buf0[i * 2    ]+64) >> 7;
             int Y2 = (buf0[i * 2 + 1]+64) >> 7;
             int U  = (ubuf0[i]       +64) >> 7;
@@ -561,7 +561,7 @@ yuv2422_1_c_template(SwsContext *c, const int16_t *buf0,
         }
     } else {
         const int16_t *ubuf1 = ubuf[1], *vbuf1 = vbuf[1];
-        for (i = 0; i < (dstW >> 1); i++) {
+        for (i = 0; i < ((dstW + 1) >> 1); i++) {
             int Y1 = (buf0[i * 2    ]    + 64) >> 7;
             int Y2 = (buf0[i * 2 + 1]    + 64) >> 7;
             int U  = (ubuf0[i] + ubuf1[i]+128) >> 8;
@@ -608,7 +608,7 @@ yuv2rgb48_X_c_template(SwsContext *c, const int16_t *lumFilter,
 {
     int i;
 
-    for (i = 0; i < (dstW >> 1); i++) {
+    for (i = 0; i < ((dstW + 1) >> 1); i++) {
         int j;
         int Y1 = -0x40000000;
         int Y2 = -0x40000000;
@@ -671,7 +671,7 @@ yuv2rgb48_2_c_template(SwsContext *c, const int32_t *buf[2],
     int uvalpha1 = 4095 - uvalpha;
     int i;
 
-    for (i = 0; i < (dstW >> 1); i++) {
+    for (i = 0; i < ((dstW + 1) >> 1); i++) {
         int Y1 = (buf0[i * 2]     * yalpha1  + buf1[i * 2]     * yalpha) >> 14;
         int Y2 = (buf0[i * 2 + 1] * yalpha1  + buf1[i * 2 + 1] * yalpha) >> 14;
         int U  = (ubuf0[i]        * uvalpha1 + ubuf1[i]        * uvalpha + (-128 << 23)) >> 14;
@@ -709,7 +709,7 @@ yuv2rgb48_1_c_template(SwsContext *c, const int32_t *buf0,
     int i;
 
     if (uvalpha < 2048) {
-        for (i = 0; i < (dstW >> 1); i++) {
+        for (i = 0; i < ((dstW + 1) >> 1); i++) {
             int Y1 = (buf0[i * 2]    ) >> 2;
             int Y2 = (buf0[i * 2 + 1]) >> 2;
             int U  = (ubuf0[i] + (-128 << 11)) >> 2;
@@ -737,7 +737,7 @@ yuv2rgb48_1_c_template(SwsContext *c, const int32_t *buf0,
         }
     } else {
         const int32_t *ubuf1 = ubuf[1], *vbuf1 = vbuf[1];
-        for (i = 0; i < (dstW >> 1); i++) {
+        for (i = 0; i < ((dstW + 1) >> 1); i++) {
             int Y1 = (buf0[i * 2]    ) >> 2;
             int Y2 = (buf0[i * 2 + 1]) >> 2;
             int U  = (ubuf0[i] + ubuf1[i] + (-128 << 12)) >> 3;
@@ -952,7 +952,7 @@ yuv2rgb_X_c_template(SwsContext *c, const int16_t *lumFilter,
 {
     int i;
 
-    for (i = 0; i < (dstW >> 1); i++) {
+    for (i = 0; i < ((dstW + 1) >> 1); i++) {
         int j, A1, A2;
         int Y1 = 1 << 18;
         int Y2 = 1 << 18;
@@ -1012,7 +1012,7 @@ yuv2rgb_2_c_template(SwsContext *c, const int16_t *buf[2],
     int uvalpha1 = 4095 - uvalpha;
     int i;
 
-    for (i = 0; i < (dstW >> 1); i++) {
+    for (i = 0; i < ((dstW + 1) >> 1); i++) {
         int Y1 = (buf0[i * 2]     * yalpha1  + buf1[i * 2]     * yalpha)  >> 19;
         int Y2 = (buf0[i * 2 + 1] * yalpha1  + buf1[i * 2 + 1] * yalpha)  >> 19;
         int U  = (ubuf0[i]        * uvalpha1 + ubuf1[i]        * uvalpha) >> 19;
@@ -1050,7 +1050,7 @@ yuv2rgb_1_c_template(SwsContext *c, const int16_t *buf0,
     int i;
 
     if (uvalpha < 2048) {
-        for (i = 0; i < (dstW >> 1); i++) {
+        for (i = 0; i < ((dstW + 1) >> 1); i++) {
             int Y1 = (buf0[i * 2    ] + 64) >> 7;
             int Y2 = (buf0[i * 2 + 1] + 64) >> 7;
             int U  = (ubuf0[i]        + 64) >> 7;
@@ -1077,7 +1077,7 @@ yuv2rgb_1_c_template(SwsContext *c, const int16_t *buf0,
         }
     } else {
         const int16_t *ubuf1 = ubuf[1], *vbuf1 = vbuf[1];
-        for (i = 0; i < (dstW >> 1); i++) {
+        for (i = 0; i < ((dstW + 1) >> 1); i++) {
             int Y1 = (buf0[i * 2    ]     +  64) >> 7;
             int Y2 = (buf0[i * 2 + 1]     +  64) >> 7;
             int U  = (ubuf0[i] + ubuf1[i] + 128) >> 8;

tests/lavfi-regression.sh

@@ -40,7 +40,7 @@ do_lavfi "crop_vflip"         "crop=iw-100:ih-100:100:100,vflip"
 do_lavfi "drawbox"            "drawbox=224:24:88:72:#FF8010@0.5"
 do_lavfi "fade"               "fade=in:5:15,fade=out:30:15"
 do_lavfi "null"               "null"
-do_lavfi "overlay"            "split[m],scale=88:72,pad=96:80:4:4[o2];[m]fifo,[o2]overlay=240:16"
+do_lavfi "overlay"            "split[m],scale=88:72,pad=96:80:4:4[o2];[m]fifo[o1],[o1][o2]overlay=240:16"
 do_lavfi "pad"                "pad=iw*1.5:ih*1.5:iw*0.3:ih*0.2"
 do_lavfi "pp"                 "mp=pp=be/de/tn/l5/al"
 do_lavfi "pp2"                "mp=pp=be/fq:16/fa/lb"