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utils.c
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const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
static AVMutex codec_mutex = AV_MUTEX_INITIALIZER;
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
{
uint8_t **p = ptr;
if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
av_freep(p);
*size = 0;
return;
}
if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
memset(*p + min_size, 0, AV_INPUT_BUFFER_PADDING_SIZE);
}
void av_fast_padded_mallocz(void *ptr, unsigned int *size, size_t min_size)
{
uint8_t **p = ptr;
if (min_size > SIZE_MAX - AV_INPUT_BUFFER_PADDING_SIZE) {
av_freep(p);
*size = 0;
return;
}
if (!ff_fast_malloc(p, size, min_size + AV_INPUT_BUFFER_PADDING_SIZE, 1))
memset(*p, 0, min_size + AV_INPUT_BUFFER_PADDING_SIZE);
}
int av_codec_is_encoder(const AVCodec *codec)
{
return codec && (codec->encode_sub || codec->encode2 || codec->receive_packet);
}
int av_codec_is_decoder(const AVCodec *codec)
{
return codec && (codec->decode || codec->receive_frame);
}
int ff_set_dimensions(AVCodecContext *s, int width, int height)
{
int ret = av_image_check_size2(width, height, s->max_pixels, AV_PIX_FMT_NONE, 0, s);
if (ret < 0)
width = height = 0;
s->coded_width = width;
s->coded_height = height;
s->width = AV_CEIL_RSHIFT(width, s->lowres);
s->height = AV_CEIL_RSHIFT(height, s->lowres);
return ret;
}
int ff_set_sar(AVCodecContext *avctx, AVRational sar)
{
int ret = av_image_check_sar(avctx->width, avctx->height, sar);
if (ret < 0) {
av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %d/%d\n",
sar.num, sar.den);
avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
return ret;
} else {
avctx->sample_aspect_ratio = sar;
}
return 0;
}
int ff_side_data_update_matrix_encoding(AVFrame *frame,
enum AVMatrixEncoding matrix_encoding)
{
AVFrameSideData *side_data;
enum AVMatrixEncoding *data;
side_data = av_frame_get_side_data(frame, AV_FRAME_DATA_MATRIXENCODING);
if (!side_data)
side_data = av_frame_new_side_data(frame, AV_FRAME_DATA_MATRIXENCODING,
sizeof(enum AVMatrixEncoding));
if (!side_data)
return AVERROR(ENOMEM);
data = (enum AVMatrixEncoding*)side_data->data;
*data = matrix_encoding;
return 0;
}
void avcodec_align_dimensions2(AVCodecContext *s, int *width, int *height,
int linesize_align[AV_NUM_DATA_POINTERS])
{
int i;
int w_align = 1;
int h_align = 1;
AVPixFmtDescriptor const *desc = av_pix_fmt_desc_get(s->pix_fmt);
if (desc) {
w_align = 1 << desc->log2_chroma_w;
h_align = 1 << desc->log2_chroma_h;
}
switch (s->pix_fmt) {
case AV_PIX_FMT_YUV420P:
case AV_PIX_FMT_YUYV422:
case AV_PIX_FMT_YVYU422:
case AV_PIX_FMT_UYVY422:
case AV_PIX_FMT_YUV422P:
case AV_PIX_FMT_YUV440P:
case AV_PIX_FMT_YUV444P:
case AV_PIX_FMT_GBRP:
case AV_PIX_FMT_GBRAP:
case AV_PIX_FMT_GRAY8:
case AV_PIX_FMT_GRAY16BE:
case AV_PIX_FMT_GRAY16LE:
case AV_PIX_FMT_YUVJ420P:
case AV_PIX_FMT_YUVJ422P:
case AV_PIX_FMT_YUVJ440P:
case AV_PIX_FMT_YUVJ444P:
case AV_PIX_FMT_YUVA420P:
case AV_PIX_FMT_YUVA422P:
case AV_PIX_FMT_YUVA444P:
case AV_PIX_FMT_YUV420P9LE:
case AV_PIX_FMT_YUV420P9BE:
case AV_PIX_FMT_YUV420P10LE:
case AV_PIX_FMT_YUV420P10BE:
case AV_PIX_FMT_YUV420P12LE:
case AV_PIX_FMT_YUV420P12BE:
case AV_PIX_FMT_YUV420P14LE:
case AV_PIX_FMT_YUV420P14BE:
case AV_PIX_FMT_YUV420P16LE:
case AV_PIX_FMT_YUV420P16BE:
case AV_PIX_FMT_YUVA420P9LE:
case AV_PIX_FMT_YUVA420P9BE:
case AV_PIX_FMT_YUVA420P10LE:
case AV_PIX_FMT_YUVA420P10BE:
case AV_PIX_FMT_YUVA420P16LE:
case AV_PIX_FMT_YUVA420P16BE:
case AV_PIX_FMT_YUV422P9LE:
case AV_PIX_FMT_YUV422P9BE:
case AV_PIX_FMT_YUV422P10LE:
case AV_PIX_FMT_YUV422P10BE:
case AV_PIX_FMT_YUV422P12LE:
case AV_PIX_FMT_YUV422P12BE:
case AV_PIX_FMT_YUV422P14LE:
case AV_PIX_FMT_YUV422P14BE:
case AV_PIX_FMT_YUV422P16LE:
case AV_PIX_FMT_YUV422P16BE:
case AV_PIX_FMT_YUVA422P9LE:
case AV_PIX_FMT_YUVA422P9BE:
case AV_PIX_FMT_YUVA422P10LE:
case AV_PIX_FMT_YUVA422P10BE:
case AV_PIX_FMT_YUVA422P12LE:
case AV_PIX_FMT_YUVA422P12BE:
case AV_PIX_FMT_YUVA422P16LE:
case AV_PIX_FMT_YUVA422P16BE:
case AV_PIX_FMT_YUV440P10LE:
case AV_PIX_FMT_YUV440P10BE:
case AV_PIX_FMT_YUV440P12LE:
case AV_PIX_FMT_YUV440P12BE:
case AV_PIX_FMT_YUV444P9LE:
case AV_PIX_FMT_YUV444P9BE:
case AV_PIX_FMT_YUV444P10LE:
case AV_PIX_FMT_YUV444P10BE:
case AV_PIX_FMT_YUV444P12LE:
case AV_PIX_FMT_YUV444P12BE:
case AV_PIX_FMT_YUV444P14LE:
case AV_PIX_FMT_YUV444P14BE:
case AV_PIX_FMT_YUV444P16LE:
case AV_PIX_FMT_YUV444P16BE:
case AV_PIX_FMT_YUVA444P9LE:
case AV_PIX_FMT_YUVA444P9BE:
case AV_PIX_FMT_YUVA444P10LE:
case AV_PIX_FMT_YUVA444P10BE:
case AV_PIX_FMT_YUVA444P12LE:
case AV_PIX_FMT_YUVA444P12BE:
case AV_PIX_FMT_YUVA444P16LE:
case AV_PIX_FMT_YUVA444P16BE:
case AV_PIX_FMT_GBRP9LE:
case AV_PIX_FMT_GBRP9BE:
case AV_PIX_FMT_GBRP10LE:
case AV_PIX_FMT_GBRP10BE:
case AV_PIX_FMT_GBRP12LE:
case AV_PIX_FMT_GBRP12BE:
case AV_PIX_FMT_GBRP14LE:
case AV_PIX_FMT_GBRP14BE:
case AV_PIX_FMT_GBRP16LE:
case AV_PIX_FMT_GBRP16BE:
case AV_PIX_FMT_GBRAP12LE:
case AV_PIX_FMT_GBRAP12BE:
case AV_PIX_FMT_GBRAP16LE:
case AV_PIX_FMT_GBRAP16BE:
w_align = 16; //FIXME assume 16 pixel per macroblock
h_align = 16 * 2; // interlaced needs 2 macroblocks height
break;
case AV_PIX_FMT_YUV411P:
case AV_PIX_FMT_YUVJ411P:
case AV_PIX_FMT_UYYVYY411:
w_align = 32;
h_align = 16 * 2;
break;
case AV_PIX_FMT_YUV410P:
if (s->codec_id == AV_CODEC_ID_SVQ1) {
w_align = 64;
h_align = 64;
}
break;
case AV_PIX_FMT_RGB555:
if (s->codec_id == AV_CODEC_ID_RPZA) {
w_align = 4;
h_align = 4;
}
if (s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
w_align = 8;
h_align = 8;
}
break;
case AV_PIX_FMT_PAL8:
case AV_PIX_FMT_BGR8:
case AV_PIX_FMT_RGB8:
if (s->codec_id == AV_CODEC_ID_SMC ||
s->codec_id == AV_CODEC_ID_CINEPAK) {
w_align = 4;
h_align = 4;
}
if (s->codec_id == AV_CODEC_ID_JV ||
s->codec_id == AV_CODEC_ID_INTERPLAY_VIDEO) {
w_align = 8;
h_align = 8;
}
break;
case AV_PIX_FMT_BGR24:
if ((s->codec_id == AV_CODEC_ID_MSZH) ||
(s->codec_id == AV_CODEC_ID_ZLIB)) {
w_align = 4;
h_align = 4;
}
break;
case AV_PIX_FMT_RGB24:
if (s->codec_id == AV_CODEC_ID_CINEPAK) {
w_align = 4;
h_align = 4;
}
break;
default:
break;
}
if (s->codec_id == AV_CODEC_ID_IFF_ILBM) {
w_align = FFMAX(w_align, 8);
}
*width = FFALIGN(*width, w_align);
*height = FFALIGN(*height, h_align);
if (s->codec_id == AV_CODEC_ID_H264 || s->lowres ||
s->codec_id == AV_CODEC_ID_VP5 || s->codec_id == AV_CODEC_ID_VP6 ||
s->codec_id == AV_CODEC_ID_VP6F || s->codec_id == AV_CODEC_ID_VP6A
) {
// some of the optimized chroma MC reads one line too much
// which is also done in mpeg decoders with lowres > 0
*height += 2;
// H.264 uses edge emulation for out of frame motion vectors, for this
// it requires a temporary area large enough to hold a 21x21 block,
// increasing witdth ensure that the temporary area is large enough,
// the next rounded up width is 32
*width = FFMAX(*width, 32);
}
for (i = 0; i < 4; i++)
linesize_align[i] = STRIDE_ALIGN;
}
void avcodec_align_dimensions(AVCodecContext *s, int *width, int *height)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(s->pix_fmt);
int chroma_shift = desc->log2_chroma_w;
int linesize_align[AV_NUM_DATA_POINTERS];
int align;
avcodec_align_dimensions2(s, width, height, linesize_align);
align = FFMAX(linesize_align[0], linesize_align[3]);
linesize_align[1] <<= chroma_shift;
linesize_align[2] <<= chroma_shift;
align = FFMAX3(align, linesize_align[1], linesize_align[2]);
*width = FFALIGN(*width, align);
}
int avcodec_enum_to_chroma_pos(int *xpos, int *ypos, enum AVChromaLocation pos)
{
if (pos <= AVCHROMA_LOC_UNSPECIFIED || pos >= AVCHROMA_LOC_NB)
return AVERROR(EINVAL);
pos--;
*xpos = (pos&1) * 128;
*ypos = ((pos>>1)^(pos<4)) * 128;
return 0;
}
enum AVChromaLocation avcodec_chroma_pos_to_enum(int xpos, int ypos)
{
int pos, xout, yout;
for (pos = AVCHROMA_LOC_UNSPECIFIED + 1; pos < AVCHROMA_LOC_NB; pos++) {
if (avcodec_enum_to_chroma_pos(&xout, &yout, pos) == 0 && xout == xpos && yout == ypos)
return pos;
}
return AVCHROMA_LOC_UNSPECIFIED;
}
int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels,
enum AVSampleFormat sample_fmt, const uint8_t *buf,
int buf_size, int align)
{
int ch, planar, needed_size, ret = 0;
needed_size = av_samples_get_buffer_size(NULL, nb_channels,
frame->nb_samples, sample_fmt,
align);
if (buf_size < needed_size)
return AVERROR(EINVAL);
planar = av_sample_fmt_is_planar(sample_fmt);
if (planar && nb_channels > AV_NUM_DATA_POINTERS) {
if (!(frame->extended_data = av_mallocz_array(nb_channels,
sizeof(*frame->extended_data))))
return AVERROR(ENOMEM);
} else {
frame->extended_data = frame->data;
}
if ((ret = av_samples_fill_arrays(frame->extended_data, &frame->linesize[0],
(uint8_t *)(intptr_t)buf, nb_channels, frame->nb_samples,
sample_fmt, align)) < 0) {
if (frame->extended_data != frame->data)
av_freep(&frame->extended_data);
return ret;
}
if (frame->extended_data != frame->data) {
for (ch = 0; ch < AV_NUM_DATA_POINTERS; ch++)
frame->data[ch] = frame->extended_data[ch];
}
return ret;
}
void ff_color_frame(AVFrame *frame, const int c[4])
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
int p, y;
av_assert0(desc->flags & AV_PIX_FMT_FLAG_PLANAR);
for (p = 0; p<desc->nb_components; p++) {
uint8_t *dst = frame->data[p];
int is_chroma = p == 1 || p == 2;
int bytes = is_chroma ? AV_CEIL_RSHIFT(frame->width, desc->log2_chroma_w) : frame->width;
int height = is_chroma ? AV_CEIL_RSHIFT(frame->height, desc->log2_chroma_h) : frame->height;
if (desc->comp[0].depth >= 9) {
((uint16_t*)dst)[0] = c[p];
av_memcpy_backptr(dst + 2, 2, bytes - 2);
dst += frame->linesize[p];
for (y = 1; y < height; y++) {
memcpy(dst, frame->data[p], 2*bytes);
dst += frame->linesize[p];
}
} else {
for (y = 0; y < height; y++) {
memset(dst, c[p], bytes);
dst += frame->linesize[p];
}
}
}
}
int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
{
int i;
for (i = 0; i < count; i++) {
int r = func(c, (char *)arg + i * size);
if (ret)
ret[i] = r;
}
emms_c();
return 0;
}
int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
{
int i;
for (i = 0; i < count; i++) {
int r = func(c, arg, i, 0);
if (ret)
ret[i] = r;
}
emms_c();
return 0;
}
enum AVPixelFormat avpriv_find_pix_fmt(const PixelFormatTag *tags,
unsigned int fourcc)
{
while (tags->pix_fmt >= 0) {
if (tags->fourcc == fourcc)
return tags->pix_fmt;
tags++;
}
return AV_PIX_FMT_NONE;
}
#if FF_API_CODEC_GET_SET
MAKE_ACCESSORS(AVCodecContext, codec, AVRational, pkt_timebase)
MAKE_ACCESSORS(AVCodecContext, codec, const AVCodecDescriptor *, codec_descriptor)
MAKE_ACCESSORS(AVCodecContext, codec, int, lowres)
MAKE_ACCESSORS(AVCodecContext, codec, int, seek_preroll)
MAKE_ACCESSORS(AVCodecContext, codec, uint16_t*, chroma_intra_matrix)
unsigned av_codec_get_codec_properties(const AVCodecContext *codec)
{
return codec->properties;
}
int av_codec_get_max_lowres(const AVCodec *codec)
{
return codec->max_lowres;
}
#endif
int avpriv_codec_get_cap_skip_frame_fill_param(const AVCodec *codec){
return !!(codec->caps_internal & FF_CODEC_CAP_SKIP_FRAME_FILL_PARAM);
}
static int64_t get_bit_rate(AVCodecContext *ctx)
{
int64_t bit_rate;
int bits_per_sample;
switch (ctx->codec_type) {
case AVMEDIA_TYPE_VIDEO:
case AVMEDIA_TYPE_DATA:
case AVMEDIA_TYPE_SUBTITLE:
case AVMEDIA_TYPE_ATTACHMENT:
bit_rate = ctx->bit_rate;
break;
case AVMEDIA_TYPE_AUDIO:
bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
bit_rate = bits_per_sample ? ctx->sample_rate * (int64_t)ctx->channels * bits_per_sample : ctx->bit_rate;
break;
default:
bit_rate = 0;
break;
}
return bit_rate;
}
static void ff_lock_avcodec(AVCodecContext *log_ctx, const AVCodec *codec)
{
if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
ff_mutex_lock(&codec_mutex);
}
static void ff_unlock_avcodec(const AVCodec *codec)
{
if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
ff_mutex_unlock(&codec_mutex);
}
int attribute_align_arg ff_codec_open2_recursive(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
int ret = 0;
ff_unlock_avcodec(codec);
ret = avcodec_open2(avctx, codec, options);
ff_lock_avcodec(avctx, codec);
return ret;
}
int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
{
int ret = 0;
int codec_init_ok = 0;
AVDictionary *tmp = NULL;
const AVPixFmtDescriptor *pixdesc;
AVCodecInternal *avci;
if (avcodec_is_open(avctx))
return 0;
if (!codec && !avctx->codec) {
av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
return AVERROR(EINVAL);
}
if (codec && avctx->codec && codec != avctx->codec) {
av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
"but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
return AVERROR(EINVAL);
}
if (!codec)
codec = avctx->codec;
if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
return AVERROR(EINVAL);
if (options)
av_dict_copy(&tmp, *options, 0);
ff_lock_avcodec(avctx, codec);
avci = av_mallocz(sizeof(*avci));
if (!avci) {
ret = AVERROR(ENOMEM);
goto end;
}
avctx->internal = avci;
avci->to_free = av_frame_alloc();
avci->compat_decode_frame = av_frame_alloc();
avci->compat_encode_packet = av_packet_alloc();
avci->buffer_frame = av_frame_alloc();
avci->buffer_pkt = av_packet_alloc();
avci->es.in_frame = av_frame_alloc();
avci->ds.in_pkt = av_packet_alloc();
avci->last_pkt_props = av_packet_alloc();
if (!avci->compat_decode_frame || !avci->compat_encode_packet ||
!avci->buffer_frame || !avci->buffer_pkt ||
!avci->es.in_frame || !avci->ds.in_pkt ||
!avci->to_free || !avci->last_pkt_props) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
avci->skip_samples_multiplier = 1;
if (codec->priv_data_size > 0) {
if (!avctx->priv_data) {
avctx->priv_data = av_mallocz(codec->priv_data_size);
if (!avctx->priv_data) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
if (codec->priv_class) {
*(const AVClass **)avctx->priv_data = codec->priv_class;
av_opt_set_defaults(avctx->priv_data);
}
}
if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
goto free_and_end;
} else {
avctx->priv_data = NULL;
}
if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
goto free_and_end;
if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
ret = AVERROR(EINVAL);
goto free_and_end;
}
// only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
(avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
if (avctx->coded_width && avctx->coded_height)
ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
else if (avctx->width && avctx->height)
ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
if (ret < 0)
goto free_and_end;
}
if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
&& ( av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
|| av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
ff_set_dimensions(avctx, 0, 0);
}
if (avctx->width > 0 && avctx->height > 0) {
if (av_image_check_sar(avctx->width, avctx->height,
avctx->sample_aspect_ratio) < 0) {
av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
avctx->sample_aspect_ratio.num,
avctx->sample_aspect_ratio.den);
avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
}
}
/* if the decoder init function was already called previously,
* free the already allocated subtitle_header before overwriting it */
if (av_codec_is_decoder(codec))
av_freep(&avctx->subtitle_header);
if (avctx->channels > FF_SANE_NB_CHANNELS || avctx->channels < 0) {
av_log(avctx, AV_LOG_ERROR, "Too many or invalid channels: %d\n", avctx->channels);
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->sample_rate < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid sample rate: %d\n", avctx->sample_rate);
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->block_align < 0) {
av_log(avctx, AV_LOG_ERROR, "Invalid block align: %d\n", avctx->block_align);
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->codec = codec;
if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
avctx->codec_id == AV_CODEC_ID_NONE) {
avctx->codec_type = codec->type;
avctx->codec_id = codec->id;
}
if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type
&& avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->frame_number = 0;
avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
const AVCodec *codec2;
av_log(avctx, AV_LOG_ERROR,
"The %s '%s' is experimental but experimental codecs are not enabled, "
"add '-strict %d' if you want to use it.\n",
codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
codec_string, codec2->name);
ret = AVERROR_EXPERIMENTAL;
goto free_and_end;
}
if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
(!avctx->time_base.num || !avctx->time_base.den)) {
avctx->time_base.num = 1;
avctx->time_base.den = avctx->sample_rate;
}
if (!HAVE_THREADS)
av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
ff_unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
ff_lock_avcodec(avctx, codec);
if (ret < 0)
goto free_and_end;
}
if (av_codec_is_decoder(avctx->codec)) {
ret = ff_decode_bsfs_init(avctx);
if (ret < 0)
goto free_and_end;
}
if (HAVE_THREADS
&& !(avci->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
ret = ff_thread_init(avctx);
if (ret < 0) {
goto free_and_end;
}
}
if (!HAVE_THREADS && !(codec->capabilities & AV_CODEC_CAP_AUTO_THREADS))
avctx->thread_count = 1;
if (avctx->codec->max_lowres < avctx->lowres || avctx->lowres < 0) {
av_log(avctx, AV_LOG_WARNING, "The maximum value for lowres supported by the decoder is %d\n",
avctx->codec->max_lowres);
avctx->lowres = avctx->codec->max_lowres;
}
if (av_codec_is_encoder(avctx->codec)) {
int i;
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
avctx->coded_frame = av_frame_alloc();
if (!avctx->coded_frame) {
ret = AVERROR(ENOMEM);
goto free_and_end;
}
FF_ENABLE_DEPRECATION_WARNINGS
#endif
if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) {
av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->codec->sample_fmts) {
for (i = 0; avctx->codec->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) {
if (avctx->sample_fmt == avctx->codec->sample_fmts[i])
break;
if (avctx->channels == 1 &&
av_get_planar_sample_fmt(avctx->sample_fmt) ==
av_get_planar_sample_fmt(avctx->codec->sample_fmts[i])) {
avctx->sample_fmt = avctx->codec->sample_fmts[i];
break;
}
}
if (avctx->codec->sample_fmts[i] == AV_SAMPLE_FMT_NONE) {
char buf[128];
snprintf(buf, sizeof(buf), "%d", avctx->sample_fmt);
av_log(avctx, AV_LOG_ERROR, "Specified sample format %s is invalid or not supported\n",
(char *)av_x_if_null(av_get_sample_fmt_name(avctx->sample_fmt), buf));
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
if (avctx->codec->pix_fmts) {
for (i = 0; avctx->codec->pix_fmts[i] != AV_PIX_FMT_NONE; i++)
if (avctx->pix_fmt == avctx->codec->pix_fmts[i])
break;
if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_NONE
&& !((avctx->codec_id == AV_CODEC_ID_MJPEG || avctx->codec_id == AV_CODEC_ID_LJPEG)
&& avctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL)) {
char buf[128];
snprintf(buf, sizeof(buf), "%d", avctx->pix_fmt);
av_log(avctx, AV_LOG_ERROR, "Specified pixel format %s is invalid or not supported\n",
(char *)av_x_if_null(av_get_pix_fmt_name(avctx->pix_fmt), buf));
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ420P ||
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ411P ||
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ422P ||
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ440P ||
avctx->codec->pix_fmts[i] == AV_PIX_FMT_YUVJ444P)
avctx->color_range = AVCOL_RANGE_JPEG;
}
if (avctx->codec->supported_samplerates) {
for (i = 0; avctx->codec->supported_samplerates[i] != 0; i++)
if (avctx->sample_rate == avctx->codec->supported_samplerates[i])
break;
if (avctx->codec->supported_samplerates[i] == 0) {
av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
avctx->sample_rate);
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
if (avctx->sample_rate < 0) {
av_log(avctx, AV_LOG_ERROR, "Specified sample rate %d is not supported\n",
avctx->sample_rate);
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->codec->channel_layouts) {
if (!avctx->channel_layout) {
av_log(avctx, AV_LOG_WARNING, "Channel layout not specified\n");
} else {
for (i = 0; avctx->codec->channel_layouts[i] != 0; i++)
if (avctx->channel_layout == avctx->codec->channel_layouts[i])
break;
if (avctx->codec->channel_layouts[i] == 0) {
char buf[512];
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
av_log(avctx, AV_LOG_ERROR, "Specified channel layout '%s' is not supported\n", buf);
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
}
if (avctx->channel_layout && avctx->channels) {
int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
if (channels != avctx->channels) {
char buf[512];
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
av_log(avctx, AV_LOG_ERROR,
"Channel layout '%s' with %d channels does not match number of specified channels %d\n",
buf, channels, avctx->channels);
ret = AVERROR(EINVAL);
goto free_and_end;
}
} else if (avctx->channel_layout) {
avctx->channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
}
if (avctx->channels < 0) {
av_log(avctx, AV_LOG_ERROR, "Specified number of channels %d is not supported\n",
avctx->channels);
ret = AVERROR(EINVAL);
goto free_and_end;
}
if(avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt);
if ( avctx->bits_per_raw_sample < 0
|| (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) {
av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n",
avctx->bits_per_raw_sample, pixdesc->comp[0].depth);
avctx->bits_per_raw_sample = pixdesc->comp[0].depth;
}
if (avctx->width <= 0 || avctx->height <= 0) {
av_log(avctx, AV_LOG_ERROR, "dimensions not set\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
}
if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO)
&& avctx->bit_rate>0 && avctx->bit_rate<1000) {
av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", avctx->bit_rate, avctx->bit_rate);
}
if (!avctx->rc_initial_buffer_occupancy)
avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3LL / 4;
if (avctx->ticks_per_frame && avctx->time_base.num &&
avctx->ticks_per_frame > INT_MAX / avctx->time_base.num) {
av_log(avctx, AV_LOG_ERROR,
"ticks_per_frame %d too large for the timebase %d/%d.",
avctx->ticks_per_frame,
avctx->time_base.num,
avctx->time_base.den);
goto free_and_end;
}
if (avctx->hw_frames_ctx) {
AVHWFramesContext *frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
if (frames_ctx->format != avctx->pix_fmt) {
av_log(avctx, AV_LOG_ERROR,
"Mismatching AVCodecContext.pix_fmt and AVHWFramesContext.format\n");
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE &&
avctx->sw_pix_fmt != frames_ctx->sw_format) {
av_log(avctx, AV_LOG_ERROR,
"Mismatching AVCodecContext.sw_pix_fmt (%s) "
"and AVHWFramesContext.sw_format (%s)\n",
av_get_pix_fmt_name(avctx->sw_pix_fmt),
av_get_pix_fmt_name(frames_ctx->sw_format));
ret = AVERROR(EINVAL);
goto free_and_end;
}
avctx->sw_pix_fmt = frames_ctx->sw_format;
}
}
avctx->pts_correction_num_faulty_pts =
avctx->pts_correction_num_faulty_dts = 0;
avctx->pts_correction_last_pts =
avctx->pts_correction_last_dts = INT64_MIN;
if ( !CONFIG_GRAY && avctx->flags & AV_CODEC_FLAG_GRAY
&& avctx->codec_descriptor->type == AVMEDIA_TYPE_VIDEO)
av_log(avctx, AV_LOG_WARNING,
"gray decoding requested but not enabled at configuration time\n");
if (avctx->flags2 & AV_CODEC_FLAG2_EXPORT_MVS) {
avctx->export_side_data |= AV_CODEC_EXPORT_DATA_MVS;
}
if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
|| avci->frame_thread_encoder)) {
ret = avctx->codec->init(avctx);
if (ret < 0) {
codec_init_ok = -1;
goto free_and_end;
}
codec_init_ok = 1;
}
ret=0;
if (av_codec_is_decoder(avctx->codec)) {
if (!avctx->bit_rate)
avctx->bit_rate = get_bit_rate(avctx);
/* validate channel layout from the decoder */
if (avctx->channel_layout) {
int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
if (!avctx->channels)
avctx->channels = channels;
else if (channels != avctx->channels) {
char buf[512];
av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
av_log(avctx, AV_LOG_WARNING,
"Channel layout '%s' with %d channels does not match specified number of channels %d: "
"ignoring specified channel layout\n",
buf, channels, avctx->channels);
avctx->channel_layout = 0;
}
}
if (avctx->channels && avctx->channels < 0 ||
avctx->channels > FF_SANE_NB_CHANNELS) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->bits_per_coded_sample < 0) {
ret = AVERROR(EINVAL);
goto free_and_end;
}
if (avctx->sub_charenc) {
if (avctx->codec_type != AVMEDIA_TYPE_SUBTITLE) {
av_log(avctx, AV_LOG_ERROR, "Character encoding is only "
"supported with subtitles codecs\n");
ret = AVERROR(EINVAL);
goto free_and_end;
} else if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB) {
av_log(avctx, AV_LOG_WARNING, "Codec '%s' is bitmap-based, "
"subtitles character encoding will be ignored\n",
avctx->codec_descriptor->name);
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_DO_NOTHING;
} else {
/* input character encoding is set for a text based subtitle
* codec at this point */
if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_AUTOMATIC)
avctx->sub_charenc_mode = FF_SUB_CHARENC_MODE_PRE_DECODER;
if (avctx->sub_charenc_mode == FF_SUB_CHARENC_MODE_PRE_DECODER) {
#if CONFIG_ICONV
iconv_t cd = iconv_open("UTF-8", avctx->sub_charenc);
if (cd == (iconv_t)-1) {
ret = AVERROR(errno);
av_log(avctx, AV_LOG_ERROR, "Unable to open iconv context "
"with input character encoding \"%s\"\n", avctx->sub_charenc);
goto free_and_end;
}
iconv_close(cd);
#else
av_log(avctx, AV_LOG_ERROR, "Character encoding subtitles "
"conversion needs a libavcodec built with iconv support "
"for this codec\n");
ret = AVERROR(ENOSYS);
goto free_and_end;
#endif
}
}
}
#if FF_API_AVCTX_TIMEBASE
if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
#endif
}
if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
}
end:
ff_unlock_avcodec(codec);
if (options) {
av_dict_free(options);
*options = tmp;
}
return ret;
free_and_end:
if (avctx->codec && avctx->codec->close &&
(codec_init_ok > 0 || (codec_init_ok < 0 &&
avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP)))
avctx->codec->close(avctx);
if (HAVE_THREADS && avci->thread_ctx)
ff_thread_free(avctx);
if (codec->priv_class && avctx->priv_data)
av_opt_free(avctx->priv_data);
av_opt_free(avctx);
if (av_codec_is_encoder(avctx->codec)) {
#if FF_API_CODED_FRAME
FF_DISABLE_DEPRECATION_WARNINGS
av_frame_free(&avctx->coded_frame);
FF_ENABLE_DEPRECATION_WARNINGS
#endif
av_freep(&avctx->extradata);
avctx->extradata_size = 0;
}
av_dict_free(&tmp);
av_freep(&avctx->priv_data);
av_freep(&avctx->subtitle_header);
av_frame_free(&avci->to_free);
av_frame_free(&avci->compat_decode_frame);
av_frame_free(&avci->buffer_frame);
av_packet_free(&avci->compat_encode_packet);
av_packet_free(&avci->buffer_pkt);
av_packet_free(&avci->last_pkt_props);
av_packet_free(&avci->ds.in_pkt);
av_frame_free(&avci->es.in_frame);
av_bsf_free(&avci->bsf);
av_buffer_unref(&avci->pool);
av_freep(&avci);
avctx->internal = NULL;
avctx->codec = NULL;
goto end;