static int nuv_header(AVFormatContext *s, AVFormatParameters *ap) {
NUVContext *ctx = (NUVContext *)s->priv_data;
ByteIOContext *pb = &s->pb;
char id_string[12], version_string[5];
double aspect, fps;
int is_mythtv, width, height, v_packs, a_packs;
int stream_nr = 0;
AVStream *vst = NULL, *ast = NULL;
get_buffer(pb, id_string, 12);
is_mythtv = !memcmp(id_string, "MythTVVideo", 12);
get_buffer(pb, version_string, 5);
url_fskip(pb, 3); // padding
width = get_le32(pb);
height = get_le32(pb);
get_le32(pb); // unused, "desiredwidth"
get_le32(pb); // unused, "desiredheight"
get_byte(pb); // 'P' == progressive, 'I' == interlaced
url_fskip(pb, 3); // padding
aspect = av_int2dbl(get_le64(pb));
fps = av_int2dbl(get_le64(pb));
// number of packets per stream type, -1 means unknown, e.g. streaming
v_packs = get_le32(pb);
a_packs = get_le32(pb);
get_le32(pb); // text
get_le32(pb); // keyframe distance (?)
if (v_packs) {
ctx->v_id = stream_nr++;
vst = av_new_stream(s, ctx->v_id);
vst->codec->codec_type = CODEC_TYPE_VIDEO;
vst->codec->codec_id = CODEC_ID_NUV;
vst->codec->codec_tag = MKTAG('R', 'J', 'P', 'G');
vst->codec->width = width;
vst->codec->height = height;
vst->codec->bits_per_sample = 10;
vst->codec->sample_aspect_ratio = av_d2q(aspect, 10000);
vst->r_frame_rate = av_d2q(1.0 / fps, 10000);
av_set_pts_info(vst, 32, 1, 1000);
} else
ctx->v_id = -1;
if (a_packs) {
ctx->a_id = stream_nr++;
ast = av_new_stream(s, ctx->a_id);
ast->codec->codec_type = CODEC_TYPE_AUDIO;
ast->codec->codec_id = CODEC_ID_PCM_S16LE;
ast->codec->channels = 2;
ast->codec->sample_rate = 44100;
ast->codec->bit_rate = 2 * 2 * 44100 * 8;
ast->codec->block_align = 2 * 2;
ast->codec->bits_per_sample = 16;
av_set_pts_info(ast, 32, 1, 1000);
} else
ctx->a_id = -1;
get_codec_data(pb, vst, ast, is_mythtv);
return 0;
}
static int nuv_header(AVFormatContext *s, AVFormatParameters *ap) {
NUVContext *ctx = s->priv_data;
AVIOContext *pb = s->pb;
char id_string[12];
double aspect, fps;
int is_mythtv, width, height, v_packs, a_packs;
int stream_nr = 0;
AVStream *vst = NULL, *ast = NULL;
avio_read(pb, id_string, 12);
is_mythtv = !memcmp(id_string, "MythTVVideo", 12);
avio_skip(pb, 5); // version string
avio_skip(pb, 3); // padding
width = avio_rl32(pb);
height = avio_rl32(pb);
avio_rl32(pb); // unused, "desiredwidth"
avio_rl32(pb); // unused, "desiredheight"
avio_r8(pb); // 'P' == progressive, 'I' == interlaced
avio_skip(pb, 3); // padding
aspect = av_int2dbl(avio_rl64(pb));
if (aspect > 0.9999 && aspect < 1.0001)
aspect = 4.0 / 3.0;
fps = av_int2dbl(avio_rl64(pb));
// number of packets per stream type, -1 means unknown, e.g. streaming
v_packs = avio_rl32(pb);
a_packs = avio_rl32(pb);
avio_rl32(pb); // text
avio_rl32(pb); // keyframe distance (?)
if (v_packs) {
ctx->v_id = stream_nr++;
vst = avformat_new_stream(s, NULL);
if (!vst)
return AVERROR(ENOMEM);
vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
vst->codec->codec_id = CODEC_ID_NUV;
vst->codec->width = width;
vst->codec->height = height;
vst->codec->bits_per_coded_sample = 10;
vst->sample_aspect_ratio = av_d2q(aspect * height / width, 10000);
vst->r_frame_rate = av_d2q(fps, 60000);
av_set_pts_info(vst, 32, 1, 1000);
} else
ctx->v_id = -1;
if (a_packs) {
ctx->a_id = stream_nr++;
ast = avformat_new_stream(s, NULL);
if (!ast)
return AVERROR(ENOMEM);
ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
ast->codec->codec_id = CODEC_ID_PCM_S16LE;
ast->codec->channels = 2;
ast->codec->sample_rate = 44100;
ast->codec->bit_rate = 2 * 2 * 44100 * 8;
ast->codec->block_align = 2 * 2;
ast->codec->bits_per_coded_sample = 16;
av_set_pts_info(ast, 32, 1, 1000);
} else
ctx->a_id = -1;
get_codec_data(pb, vst, ast, is_mythtv);
ctx->rtjpg_video = vst && vst->codec->codec_id == CODEC_ID_NUV;
return 0;
}
static int nuv_header(AVFormatContext *s)
{
NUVContext *ctx = s->priv_data;
AVIOContext *pb = s->pb;
char id_string[12];
double aspect, fps;
int is_mythtv, width, height, v_packs, a_packs, ret;
AVStream *vst = NULL, *ast = NULL;
avio_read(pb, id_string, 12);
is_mythtv = !memcmp(id_string, "MythTVVideo", 12);
avio_skip(pb, 5); // version string
avio_skip(pb, 3); // padding
width = avio_rl32(pb);
height = avio_rl32(pb);
avio_rl32(pb); // unused, "desiredwidth"
avio_rl32(pb); // unused, "desiredheight"
avio_r8(pb); // 'P' == progressive, 'I' == interlaced
avio_skip(pb, 3); // padding
aspect = av_int2double(avio_rl64(pb));
if (aspect > 0.9999 && aspect < 1.0001)
aspect = 4.0 / 3.0;
fps = av_int2double(avio_rl64(pb));
if (fps < 0.0f) {
if (s->error_recognition & AV_EF_EXPLODE) {
av_log(s, AV_LOG_ERROR, "Invalid frame rate %f\n", fps);
return AVERROR_INVALIDDATA;
} else {
av_log(s, AV_LOG_WARNING, "Invalid frame rate %f, setting to 0.\n", fps);
fps = 0.0f;
}
}
// number of packets per stream type, -1 means unknown, e.g. streaming
v_packs = avio_rl32(pb);
a_packs = avio_rl32(pb);
avio_rl32(pb); // text
avio_rl32(pb); // keyframe distance (?)
if (v_packs) {
vst = avformat_new_stream(s, NULL);
if (!vst)
return AVERROR(ENOMEM);
ctx->v_id = vst->index;
ret = av_image_check_size(width, height, 0, ctx);
if (ret < 0)
return ret;
vst->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
vst->codecpar->codec_id = AV_CODEC_ID_NUV;
vst->codecpar->width = width;
vst->codecpar->height = height;
vst->codecpar->bits_per_coded_sample = 10;
vst->sample_aspect_ratio = av_d2q(aspect * height / width,
10000);
#if FF_API_R_FRAME_RATE
vst->r_frame_rate =
#endif
vst->avg_frame_rate = av_d2q(fps, 60000);
avpriv_set_pts_info(vst, 32, 1, 1000);
} else
ctx->v_id = -1;
if (a_packs) {
ast = avformat_new_stream(s, NULL);
if (!ast)
return AVERROR(ENOMEM);
ctx->a_id = ast->index;
ast->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
ast->codecpar->codec_id = AV_CODEC_ID_PCM_S16LE;
ast->codecpar->channels = 2;
ast->codecpar->channel_layout = AV_CH_LAYOUT_STEREO;
ast->codecpar->sample_rate = 44100;
ast->codecpar->bit_rate = 2 * 2 * 44100 * 8;
ast->codecpar->block_align = 2 * 2;
ast->codecpar->bits_per_coded_sample = 16;
avpriv_set_pts_info(ast, 32, 1, 1000);
} else
ctx->a_id = -1;
if ((ret = get_codec_data(pb, vst, ast, is_mythtv)) < 0)
return ret;
ctx->rtjpg_video = vst && vst->codecpar->codec_id == AV_CODEC_ID_NUV;
return 0;
}
