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forbid codec options which would not render in a browser

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byte[] 2020-05-26 21:35:11 -04:00
parent 9a614820f0
commit e7bf79289e
1 changed files with 66 additions and 3 deletions
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67
src/validation.c
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@ -1,4 +1,5 @@
#include <libavformat/avformat.h> #include <libavformat/avformat.h>
#include <libavutil/pixdesc.h>
#include <stdbool.h> #include <stdbool.h>
#include <string.h> #include <string.h>
@ -7,6 +8,50 @@
const AVRational t_1h = { 3600, 1 }; const AVRational t_1h = { 3600, 1 };
const AVRational t_0h = { 0, 1 }; const AVRational t_0h = { 0, 1 };
static int validate_video_pixel_format(enum AVPixelFormat format)
{
switch (format) {
// Still image formats
case AV_PIX_FMT_RGB8:
case AV_PIX_FMT_RGB24:
case AV_PIX_FMT_RGB32:
case AV_PIX_FMT_RGB48:
case AV_PIX_FMT_RGBA:
// Video frame formats
case AV_PIX_FMT_YUV420P:
case AV_PIX_FMT_YUVJ420P:
case AV_PIX_FMT_YUV420P10LE:
case AV_PIX_FMT_YUV422P:
case AV_PIX_FMT_YUV422P10LE:
case AV_PIX_FMT_YUV444P:
case AV_PIX_FMT_YUV444P10LE:
case AV_PIX_FMT_YUV420P12LE:
case AV_PIX_FMT_YUV422P12LE:
case AV_PIX_FMT_YUV444P12LE:
return true;
default:
return false;
}
}
static int validate_audio_sample_format(enum AVSampleFormat format)
{
switch (format) {
case AV_SAMPLE_FMT_FLT:
case AV_SAMPLE_FMT_FLTP:
case AV_SAMPLE_FMT_S16:
case AV_SAMPLE_FMT_S16P:
case AV_SAMPLE_FMT_S32:
case AV_SAMPLE_FMT_S32P:
return true;
default:
return false;
}
}
int mediatools_validate_video(AVFormatContext *format) int mediatools_validate_video(AVFormatContext *format)
{ {
uint64_t num_vstreams = 0; uint64_t num_vstreams = 0;
@ -15,13 +60,31 @@ int mediatools_validate_video(AVFormatContext *format)
int64_t astream_idx = -1; int64_t astream_idx = -1;
for (size_t i = 0; i < format->nb_streams; ++i) { for (size_t i = 0; i < format->nb_streams; ++i) {
if (format->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) { AVCodecParameters *codecpar = format->streams[i]->codecpar;
if (codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
num_vstreams++; num_vstreams++;
vstream_idx = i; vstream_idx = i;
if (!validate_video_pixel_format(codecpar->format)) {
printf("Found unsupported pixel format %s\n", av_get_pix_fmt_name(codecpar->format));
return false;
} }
if (format->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
} else if (codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
num_astreams++; num_astreams++;
astream_idx = i; astream_idx = i;
if (!validate_audio_sample_format(codecpar->format)) {
printf("Found unsupported audio sample format %s\n", av_get_sample_fmt_name(codecpar->format));
return false;
}
} else if (codecpar->codec_type == AVMEDIA_TYPE_SUBTITLE) {
// Allow subtitles
} else {
printf("Unknown codec type %s\n", av_get_media_type_string(codecpar->codec_type));
return false;
} }
} }