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avfilter/vf_readeia608: add >8 depth support

tags/n4.4
Paul B Mahol 5 years ago
parent
a423bc9dc2
commit
df4e2b923c
1 changed files with 72 additions and 32 deletions
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  1. +72
    -32
      libavfilter/vf_readeia608.c

+ 72
- 32
libavfilter/vf_readeia608.c View File

@@ -62,7 +62,7 @@ typedef struct ScanItem {
int found;
int white;
int black;
uint64_t histogram[256];
uint64_t *histogram;
uint8_t byte[2];

CodeItem *code;
@@ -77,8 +77,13 @@ typedef struct ReadEIA608Context {
int chp;
int lp;

int depth;
int max;
int nb_allocated;
ScanItem *scan;

void (*read_line[2])(AVFrame *in, int nb_line,
LineItem *line, int lp, int w);
} ReadEIA608Context;

#define OFFSET(x) offsetof(ReadEIA608Context, x)
@@ -98,13 +103,26 @@ AVFILTER_DEFINE_CLASS(readeia608);
static int query_formats(AVFilterContext *ctx)
{
static const enum AVPixelFormat pixel_fmts[] = {
AV_PIX_FMT_GRAY8,
AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14,
AV_PIX_FMT_GRAY16,
AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
AV_PIX_FMT_YUVJ411P,
AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
AV_PIX_FMT_YUV440P10,
AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
AV_PIX_FMT_YUV440P12,
AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
AV_PIX_FMT_NONE
};
AVFilterFormats *formats = ff_make_format_list(pixel_fmts);
@@ -142,11 +160,13 @@ static int config_filter(AVFilterContext *ctx, int start, int end)
for (int i = 0; i < s->nb_allocated; i++) {
ScanItem *scan = &s->scan[i];

if (!scan->histogram)
scan->histogram = av_calloc(s->max + 1, sizeof(*scan->histogram));
if (!scan->line)
scan->line = av_calloc(size, sizeof(*scan->line));
if (!scan->code)
scan->code = av_calloc(size, sizeof(*scan->code));
if (!scan->line || !scan->code)
if (!scan->line || !scan->code || !scan->histogram)
return AVERROR(ENOMEM);
}

@@ -156,17 +176,9 @@ static int config_filter(AVFilterContext *ctx, int start, int end)
return 0;
}

static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
ReadEIA608Context *s = ctx->priv;

return config_filter(ctx, s->start, s->end);
}

static void build_histogram(ReadEIA608Context *s, ScanItem *scan, const LineItem *line, int len)
{
memset(scan->histogram, 0, sizeof(scan->histogram));
memset(scan->histogram, 0, (s->max + 1) * sizeof(*scan->histogram));

for (int i = LAG; i < len + LAG; i++)
scan->histogram[line[i].input]++;
@@ -174,18 +186,19 @@ static void build_histogram(ReadEIA608Context *s, ScanItem *scan, const LineItem

static void find_black_and_white(ReadEIA608Context *s, ScanItem *scan)
{
const int max = s->max;
int start = 0, end = 0, middle;
int black = 0, white = 0;
int cnt;

for (int i = 0; i < 256; i++) {
for (int i = 0; i <= max; i++) {
if (scan->histogram[i]) {
start = i;
break;
}
}

for (int i = 255; i >= 0; i--) {
for (int i = max; i >= 0; i--) {
if (scan->histogram[i]) {
end = i;
break;
@@ -308,12 +321,54 @@ static void dump_code(AVFilterContext *ctx, ScanItem *scan, int len, int item)
av_log(ctx, AV_LOG_DEBUG, "\n");
}

#define READ_LINE(type, name) \
static void read_##name(AVFrame *in, int nb_line, LineItem *line, int lp, int w) \
{ \
const type *src = (const type *)(&in->data[0][nb_line * in->linesize[0]]);\
\
if (lp) { \
for (int i = 0; i < w; i++) { \
int a = FFMAX(i - 3, 0); \
int b = FFMAX(i - 2, 0); \
int c = FFMAX(i - 1, 0); \
int d = FFMIN(i + 3, w-1); \
int e = FFMIN(i + 2, w-1); \
int f = FFMIN(i + 1, w-1); \
\
line[LAG + i].input = (src[a] + src[b] + src[c] + src[i] + \
src[d] + src[e] + src[f] + 6) / 7; \
} \
} else { \
for (int i = 0; i < w; i++) { \
line[LAG + i].input = src[i]; \
} \
} \
}

READ_LINE(uint8_t, byte)
READ_LINE(uint16_t, word)

static int config_input(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->dst;
ReadEIA608Context *s = ctx->priv;
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);

if (!desc)
return AVERROR_BUG;
s->depth = desc->comp[0].depth;
s->max = (1 << desc->comp[0].depth) - 1;
s->read_line[0] = read_byte;
s->read_line[1] = read_word;

return config_filter(ctx, s->start, s->end);
}

static void extract_line(AVFilterContext *ctx, AVFrame *in, ScanItem *scan, int w, int nb_line)
{
ReadEIA608Context *s = ctx->priv;
LineItem *line = scan->line;
int i, j, ch, len;
const uint8_t *src;
uint8_t codes[19] = { 0 };
float bit_size = 0.f;
int parity;
@@ -322,23 +377,7 @@ static void extract_line(AVFilterContext *ctx, AVFrame *in, ScanItem *scan, int
scan->byte[0] = scan->byte[1] = 0;
scan->found = 0;

src = &in->data[0][nb_line * in->linesize[0]];
if (s->lp) {
for (i = 0; i < w; i++) {
int a = FFMAX(i - 3, 0);
int b = FFMAX(i - 2, 0);
int c = FFMAX(i - 1, 0);
int d = FFMIN(i + 3, w-1);
int e = FFMIN(i + 2, w-1);
int f = FFMIN(i + 1, w-1);

line[LAG + i].input = (src[a] + src[b] + src[c] + src[i] + src[d] + src[e] + src[f] + 6) / 7;
}
} else {
for (i = 0; i < w; i++) {
line[LAG + i].input = src[i];
}
}
s->read_line[s->depth > 8](in, nb_line, line, s->lp, w);

build_histogram(s, scan, line, w);
find_black_and_white(s, scan);
@@ -471,6 +510,7 @@ static av_cold void uninit(AVFilterContext *ctx)
for (int i = 0; i < s->nb_allocated; i++) {
ScanItem *scan = &s->scan[i];

av_freep(&scan->histogram);
av_freep(&scan->code);
av_freep(&scan->line);
}


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