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fftools/ffmpeg: move subtitle helpers to ffmpeg_dec, their only user

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This commit is contained in:
Anton Khirnov 2024-02-13 15:56:19 +01:00
parent 826cfd9997
commit 6b6815b1c8
3 changed files with 120 additions and 123 deletions
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120
fftools/ffmpeg.c
View File

@ -640,126 +640,6 @@ static void print_report(int is_last_report, int64_t timer_start, int64_t cur_ti
first_report = 0;
}
int copy_av_subtitle(AVSubtitle *dst, const AVSubtitle *src)
{
int ret = AVERROR_BUG;
AVSubtitle tmp = {
.format = src->format,
.start_display_time = src->start_display_time,
.end_display_time = src->end_display_time,
.num_rects = 0,
.rects = NULL,
.pts = src->pts
};
if (!src->num_rects)
goto success;
if (!(tmp.rects = av_calloc(src->num_rects, sizeof(*tmp.rects))))
return AVERROR(ENOMEM);
for (int i = 0; i < src->num_rects; i++) {
AVSubtitleRect *src_rect = src->rects[i];
AVSubtitleRect *dst_rect;
if (!(dst_rect = tmp.rects[i] = av_mallocz(sizeof(*tmp.rects[0])))) {
ret = AVERROR(ENOMEM);
goto cleanup;
}
tmp.num_rects++;
dst_rect->type = src_rect->type;
dst_rect->flags = src_rect->flags;
dst_rect->x = src_rect->x;
dst_rect->y = src_rect->y;
dst_rect->w = src_rect->w;
dst_rect->h = src_rect->h;
dst_rect->nb_colors = src_rect->nb_colors;
if (src_rect->text)
if (!(dst_rect->text = av_strdup(src_rect->text))) {
ret = AVERROR(ENOMEM);
goto cleanup;
}
if (src_rect->ass)
if (!(dst_rect->ass = av_strdup(src_rect->ass))) {
ret = AVERROR(ENOMEM);
goto cleanup;
}
for (int j = 0; j < 4; j++) {
// SUBTITLE_BITMAP images are special in the sense that they
// are like PAL8 images. first pointer to data, second to
// palette. This makes the size calculation match this.
size_t buf_size = src_rect->type == SUBTITLE_BITMAP && j == 1 ?
AVPALETTE_SIZE :
src_rect->h * src_rect->linesize[j];
if (!src_rect->data[j])
continue;
if (!(dst_rect->data[j] = av_memdup(src_rect->data[j], buf_size))) {
ret = AVERROR(ENOMEM);
goto cleanup;
}
dst_rect->linesize[j] = src_rect->linesize[j];
}
}
success:
*dst = tmp;
return 0;
cleanup:
avsubtitle_free(&tmp);
return ret;
}
static void subtitle_free(void *opaque, uint8_t *data)
{
AVSubtitle *sub = (AVSubtitle*)data;
avsubtitle_free(sub);
av_free(sub);
}
int subtitle_wrap_frame(AVFrame *frame, AVSubtitle *subtitle, int copy)
{
AVBufferRef *buf;
AVSubtitle *sub;
int ret;
if (copy) {
sub = av_mallocz(sizeof(*sub));
ret = sub ? copy_av_subtitle(sub, subtitle) : AVERROR(ENOMEM);
if (ret < 0) {
av_freep(&sub);
return ret;
}
} else {
sub = av_memdup(subtitle, sizeof(*subtitle));
if (!sub)
return AVERROR(ENOMEM);
memset(subtitle, 0, sizeof(*subtitle));
}
buf = av_buffer_create((uint8_t*)sub, sizeof(*sub),
subtitle_free, NULL, 0);
if (!buf) {
avsubtitle_free(sub);
av_freep(&sub);
return AVERROR(ENOMEM);
}
frame->buf[0] = buf;
return 0;
}
static void print_stream_maps(void)
{
av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");

3
fftools/ffmpeg.h
View File

@ -709,9 +709,6 @@ int init_simple_filtergraph(InputStream *ist, OutputStream *ost,
Scheduler *sch, unsigned sch_idx_enc);
int init_complex_filtergraph(FilterGraph *fg);
int copy_av_subtitle(AVSubtitle *dst, const AVSubtitle *src);
int subtitle_wrap_frame(AVFrame *frame, AVSubtitle *subtitle, int copy);
/**
* Get our axiliary frame data attached to the frame, allocating it
* if needed.

120
fftools/ffmpeg_dec.c
View File

@ -371,6 +371,126 @@ static int video_frame_process(DecoderPriv *dp, AVFrame *frame)
return 0;
}
static int copy_av_subtitle(AVSubtitle *dst, const AVSubtitle *src)
{
int ret = AVERROR_BUG;
AVSubtitle tmp = {
.format = src->format,
.start_display_time = src->start_display_time,
.end_display_time = src->end_display_time,
.num_rects = 0,
.rects = NULL,
.pts = src->pts
};
if (!src->num_rects)
goto success;
if (!(tmp.rects = av_calloc(src->num_rects, sizeof(*tmp.rects))))
return AVERROR(ENOMEM);
for (int i = 0; i < src->num_rects; i++) {
AVSubtitleRect *src_rect = src->rects[i];
AVSubtitleRect *dst_rect;
if (!(dst_rect = tmp.rects[i] = av_mallocz(sizeof(*tmp.rects[0])))) {
ret = AVERROR(ENOMEM);
goto cleanup;
}
tmp.num_rects++;
dst_rect->type = src_rect->type;
dst_rect->flags = src_rect->flags;
dst_rect->x = src_rect->x;
dst_rect->y = src_rect->y;
dst_rect->w = src_rect->w;
dst_rect->h = src_rect->h;
dst_rect->nb_colors = src_rect->nb_colors;
if (src_rect->text)
if (!(dst_rect->text = av_strdup(src_rect->text))) {
ret = AVERROR(ENOMEM);
goto cleanup;
}
if (src_rect->ass)
if (!(dst_rect->ass = av_strdup(src_rect->ass))) {
ret = AVERROR(ENOMEM);
goto cleanup;
}
for (int j = 0; j < 4; j++) {
// SUBTITLE_BITMAP images are special in the sense that they
// are like PAL8 images. first pointer to data, second to
// palette. This makes the size calculation match this.
size_t buf_size = src_rect->type == SUBTITLE_BITMAP && j == 1 ?
AVPALETTE_SIZE :
src_rect->h * src_rect->linesize[j];
if (!src_rect->data[j])
continue;
if (!(dst_rect->data[j] = av_memdup(src_rect->data[j], buf_size))) {
ret = AVERROR(ENOMEM);
goto cleanup;
}
dst_rect->linesize[j] = src_rect->linesize[j];
}
}
success:
*dst = tmp;
return 0;
cleanup:
avsubtitle_free(&tmp);
return ret;
}
static void subtitle_free(void *opaque, uint8_t *data)
{
AVSubtitle *sub = (AVSubtitle*)data;
avsubtitle_free(sub);
av_free(sub);
}
static int subtitle_wrap_frame(AVFrame *frame, AVSubtitle *subtitle, int copy)
{
AVBufferRef *buf;
AVSubtitle *sub;
int ret;
if (copy) {
sub = av_mallocz(sizeof(*sub));
ret = sub ? copy_av_subtitle(sub, subtitle) : AVERROR(ENOMEM);
if (ret < 0) {
av_freep(&sub);
return ret;
}
} else {
sub = av_memdup(subtitle, sizeof(*subtitle));
if (!sub)
return AVERROR(ENOMEM);
memset(subtitle, 0, sizeof(*subtitle));
}
buf = av_buffer_create((uint8_t*)sub, sizeof(*sub),
subtitle_free, NULL, 0);
if (!buf) {
avsubtitle_free(sub);
av_freep(&sub);
return AVERROR(ENOMEM);
}
frame->buf[0] = buf;
return 0;
}
static int process_subtitle(DecoderPriv *dp, AVFrame *frame)
{
const AVSubtitle *subtitle = (AVSubtitle*)frame->buf[0]->data;