#include "libavutil/channel_layout.h"
#include "libavutil/crc.h"
#include "libavutil/frame.h"
+#include "libavutil/hwcontext.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "libavutil/pixdesc.h"
int av_codec_is_encoder(const AVCodec *codec)
{
- return codec && (codec->encode_sub || codec->encode2);
+ return codec && (codec->encode_sub || codec->encode2 ||codec->send_frame);
}
int av_codec_is_decoder(const AVCodec *codec)
{
- return codec && codec->decode;
+ return codec && (codec->decode || codec->send_packet);
}
av_cold void avcodec_register(AVCodec *codec)
{
int ret;
+ if (avctx->hw_frames_ctx)
+ return av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
+
if ((ret = update_frame_pool(avctx, frame)) < 0)
return ret;
frame->reordered_opaque = avctx->reordered_opaque;
if (!pkt) {
+#if FF_API_PKT_PTS
+FF_DISABLE_DEPRECATION_WARNINGS
frame->pkt_pts = AV_NOPTS_VALUE;
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+ frame->pts = AV_NOPTS_VALUE;
return 0;
}
+#if FF_API_PKT_PTS
+FF_DISABLE_DEPRECATION_WARNINGS
frame->pkt_pts = pkt->pts;
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+ frame->pts = pkt->pts;
for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) {
int size;
av_freep(&avctx->internal->hwaccel_priv_data);
avctx->hwaccel = NULL;
+ av_buffer_unref(&avctx->hw_frames_ctx);
+
ret = avctx->get_format(avctx, choices);
desc = av_pix_fmt_desc_get(ret);
if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
break;
+ if (avctx->hw_frames_ctx) {
+ AVHWFramesContext *hw_frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data;
+ if (hw_frames_ctx->format != ret) {
+ av_log(avctx, AV_LOG_ERROR, "Format returned from get_buffer() "
+ "does not match the format of provided AVHWFramesContext\n");
+ ret = AV_PIX_FMT_NONE;
+ break;
+ }
+ }
+
if (!setup_hwaccel(avctx, ret, desc->name))
break;
goto free_and_end;
}
+ avctx->internal->buffer_frame = av_frame_alloc();
+ if (!avctx->internal->buffer_frame) {
+ ret = AVERROR(ENOMEM);
+ goto free_and_end;
+ }
+
+ avctx->internal->buffer_pkt = av_packet_alloc();
+ if (!avctx->internal->buffer_pkt) {
+ ret = AVERROR(ENOMEM);
+ goto free_and_end;
+ }
+
if (codec->priv_data_size > 0) {
if (!avctx->priv_data) {
avctx->priv_data = av_mallocz(codec->priv_data_size);
}
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])
if (!avctx->rc_initial_buffer_occupancy)
avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3 / 4;
+
+ if (avctx->ticks_per_frame &&
+ 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->codec->init && !(avctx->active_thread_type & FF_THREAD_FRAME)) {
*got_packet_ptr = 0;
+ if (!avctx->codec->encode2) {
+ av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
+ return AVERROR(ENOSYS);
+ }
+
if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
- av_free_packet(avpkt);
+ av_packet_unref(avpkt);
av_init_packet(avpkt);
return 0;
}
}
if (ret < 0 || !*got_packet_ptr) {
- av_free_packet(avpkt);
+ av_packet_unref(avpkt);
av_init_packet(avpkt);
goto end;
}
*got_packet_ptr = 0;
+ if (!avctx->codec->encode2) {
+ av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n");
+ return AVERROR(ENOSYS);
+ }
+
if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) {
- av_free_packet(avpkt);
+ av_packet_unref(avpkt);
av_init_packet(avpkt);
avpkt->size = 0;
return 0;
}
if (ret < 0 || !*got_packet_ptr)
- av_free_packet(avpkt);
+ av_packet_unref(avpkt);
emms_c();
return ret;
if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) {
av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter "
"changes, but PARAM_CHANGE side data was sent to it.\n");
- return AVERROR(EINVAL);
+ ret = AVERROR(EINVAL);
+ goto fail2;
}
if (size < 4)
size -= 8;
ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
if (ret < 0)
- return ret;
+ goto fail2;
}
return 0;
fail:
av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n");
- return AVERROR_INVALIDDATA;
+ ret = AVERROR_INVALIDDATA;
+fail2:
+ if (ret < 0) {
+ av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
+ if (avctx->err_recognition & AV_EF_EXPLODE)
+ return ret;
+ }
+ return 0;
}
static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame)
if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx))
return -1;
+ if (!avctx->codec->decode) {
+ av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
+ return AVERROR(ENOSYS);
+ }
+
avctx->internal->pkt = avpkt;
ret = apply_param_change(avctx, avpkt);
- if (ret < 0) {
- av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
- if (avctx->err_recognition & AV_EF_EXPLODE)
- return ret;
- }
+ if (ret < 0)
+ return ret;
av_frame_unref(picture);
*got_frame_ptr = 0;
+ if (!avctx->codec->decode) {
+ av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n");
+ return AVERROR(ENOSYS);
+ }
+
avctx->internal->pkt = avpkt;
if (!avpkt->data && avpkt->size) {
}
ret = apply_param_change(avctx, avpkt);
- if (ret < 0) {
- av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n");
- if (avctx->err_recognition & AV_EF_EXPLODE)
- return ret;
- }
+ if (ret < 0)
+ return ret;
av_frame_unref(frame);
memset(sub, 0, sizeof(AVSubtitle));
}
+static int do_decode(AVCodecContext *avctx, AVPacket *pkt)
+{
+ int got_frame;
+ int ret;
+
+ av_assert0(!avctx->internal->buffer_frame->buf[0]);
+
+ if (!pkt)
+ pkt = avctx->internal->buffer_pkt;
+
+ // This is the lesser evil. The field is for compatibility with legacy users
+ // of the legacy API, and users using the new API should not be forced to
+ // even know about this field.
+ avctx->refcounted_frames = 1;
+
+ // Some codecs (at least wma lossless) will crash when feeding drain packets
+ // after EOF was signaled.
+ if (avctx->internal->draining_done)
+ return AVERROR_EOF;
+
+ if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
+ ret = avcodec_decode_video2(avctx, avctx->internal->buffer_frame,
+ &got_frame, pkt);
+ if (ret >= 0)
+ ret = pkt->size;
+ } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
+ ret = avcodec_decode_audio4(avctx, avctx->internal->buffer_frame,
+ &got_frame, pkt);
+ } else {
+ ret = AVERROR(EINVAL);
+ }
+
+ if (ret < 0)
+ return ret;
+
+ if (avctx->internal->draining && !got_frame)
+ avctx->internal->draining_done = 1;
+
+ if (ret >= pkt->size) {
+ av_packet_unref(avctx->internal->buffer_pkt);
+ } else {
+ int consumed = ret;
+
+ if (pkt != avctx->internal->buffer_pkt) {
+ av_packet_unref(avctx->internal->buffer_pkt);
+ if ((ret = av_packet_ref(avctx->internal->buffer_pkt, pkt)) < 0)
+ return ret;
+ }
+
+ avctx->internal->buffer_pkt->data += consumed;
+ avctx->internal->buffer_pkt->size -= consumed;
+ avctx->internal->buffer_pkt->pts = AV_NOPTS_VALUE;
+ avctx->internal->buffer_pkt->dts = AV_NOPTS_VALUE;
+ }
+
+ if (got_frame)
+ av_assert0(avctx->internal->buffer_frame->buf[0]);
+
+ return 0;
+}
+
+int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
+{
+ int ret;
+
+ if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
+ return AVERROR(EINVAL);
+
+ if (avctx->internal->draining)
+ return AVERROR_EOF;
+
+ if (!avpkt || !avpkt->size) {
+ avctx->internal->draining = 1;
+ avpkt = NULL;
+
+ if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
+ return 0;
+ }
+
+ if (avctx->codec->send_packet) {
+ if (avpkt) {
+ ret = apply_param_change(avctx, (AVPacket *)avpkt);
+ if (ret < 0)
+ return ret;
+ }
+ return avctx->codec->send_packet(avctx, avpkt);
+ }
+
+ // Emulation via old API. Assume avpkt is likely not refcounted, while
+ // decoder output is always refcounted, and avoid copying.
+
+ if (avctx->internal->buffer_pkt->size || avctx->internal->buffer_frame->buf[0])
+ return AVERROR(EAGAIN);
+
+ // The goal is decoding the first frame of the packet without using memcpy,
+ // because the common case is having only 1 frame per packet (especially
+ // with video, but audio too). In other cases, it can't be avoided, unless
+ // the user is feeding refcounted packets.
+ return do_decode(avctx, (AVPacket *)avpkt);
+}
+
+int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
+{
+ int ret;
+
+ av_frame_unref(frame);
+
+ if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
+ return AVERROR(EINVAL);
+
+ if (avctx->codec->receive_frame) {
+ if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
+ return AVERROR_EOF;
+ return avctx->codec->receive_frame(avctx, frame);
+ }
+
+ // Emulation via old API.
+
+ if (!avctx->internal->buffer_frame->buf[0]) {
+ if (!avctx->internal->buffer_pkt->size && !avctx->internal->draining)
+ return AVERROR(EAGAIN);
+
+ while (1) {
+ if ((ret = do_decode(avctx, avctx->internal->buffer_pkt)) < 0) {
+ av_packet_unref(avctx->internal->buffer_pkt);
+ return ret;
+ }
+ // Some audio decoders may consume partial data without returning
+ // a frame (fate-wmapro-2ch). There is no way to make the caller
+ // call avcodec_receive_frame() again without returning a frame,
+ // so try to decode more in these cases.
+ if (avctx->internal->buffer_frame->buf[0] ||
+ !avctx->internal->buffer_pkt->size)
+ break;
+ }
+ }
+
+ if (!avctx->internal->buffer_frame->buf[0])
+ return avctx->internal->draining ? AVERROR_EOF : AVERROR(EAGAIN);
+
+ av_frame_move_ref(frame, avctx->internal->buffer_frame);
+ return 0;
+}
+
+static int do_encode(AVCodecContext *avctx, const AVFrame *frame, int *got_packet)
+{
+ int ret;
+ *got_packet = 0;
+
+ av_packet_unref(avctx->internal->buffer_pkt);
+ avctx->internal->buffer_pkt_valid = 0;
+
+ if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
+ ret = avcodec_encode_video2(avctx, avctx->internal->buffer_pkt,
+ frame, got_packet);
+ } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) {
+ ret = avcodec_encode_audio2(avctx, avctx->internal->buffer_pkt,
+ frame, got_packet);
+ } else {
+ ret = AVERROR(EINVAL);
+ }
+
+ if (ret >= 0 && *got_packet) {
+ // Encoders must always return ref-counted buffers.
+ // Side-data only packets have no data and can be not ref-counted.
+ av_assert0(!avctx->internal->buffer_pkt->data || avctx->internal->buffer_pkt->buf);
+ avctx->internal->buffer_pkt_valid = 1;
+ ret = 0;
+ } else {
+ av_packet_unref(avctx->internal->buffer_pkt);
+ }
+
+ return ret;
+}
+
+int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame)
+{
+ if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
+ return AVERROR(EINVAL);
+
+ if (avctx->internal->draining)
+ return AVERROR_EOF;
+
+ if (!frame) {
+ avctx->internal->draining = 1;
+
+ if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
+ return 0;
+ }
+
+ if (avctx->codec->send_frame)
+ return avctx->codec->send_frame(avctx, frame);
+
+ // Emulation via old API. Do it here instead of avcodec_receive_packet, because:
+ // 1. if the AVFrame is not refcounted, the copying will be much more
+ // expensive than copying the packet data
+ // 2. assume few users use non-refcounted AVPackets, so usually no copy is
+ // needed
+
+ if (avctx->internal->buffer_pkt_valid)
+ return AVERROR(EAGAIN);
+
+ return do_encode(avctx, frame, &(int){0});
+}
+
+int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt)
+{
+ av_packet_unref(avpkt);
+
+ if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec))
+ return AVERROR(EINVAL);
+
+ if (avctx->codec->receive_packet) {
+ if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY))
+ return AVERROR_EOF;
+ return avctx->codec->receive_packet(avctx, avpkt);
+ }
+
+ // Emulation via old API.
+
+ if (!avctx->internal->buffer_pkt_valid) {
+ int got_packet;
+ int ret;
+ if (!avctx->internal->draining)
+ return AVERROR(EAGAIN);
+ ret = do_encode(avctx, NULL, &got_packet);
+ if (ret < 0)
+ return ret;
+ if (ret >= 0 && !got_packet)
+ return AVERROR_EOF;
+ }
+
+ av_packet_move_ref(avpkt, avctx->internal->buffer_pkt);
+ avctx->internal->buffer_pkt_valid = 0;
+ return 0;
+}
+
av_cold int avcodec_close(AVCodecContext *avctx)
{
+ int i;
+
if (avcodec_is_open(avctx)) {
FramePool *pool = avctx->internal->pool;
- int i;
+
if (HAVE_THREADS && avctx->internal->thread_ctx)
ff_thread_free(avctx);
if (avctx->codec && avctx->codec->close)
avctx->codec->close(avctx);
av_frame_free(&avctx->internal->to_free);
+ av_frame_free(&avctx->internal->buffer_frame);
+ av_packet_free(&avctx->internal->buffer_pkt);
for (i = 0; i < FF_ARRAY_ELEMS(pool->pools); i++)
av_buffer_pool_uninit(&pool->pools[i]);
av_freep(&avctx->internal->pool);
av_freep(&avctx->internal);
}
+ for (i = 0; i < avctx->nb_coded_side_data; i++)
+ av_freep(&avctx->coded_side_data[i].data);
+ av_freep(&avctx->coded_side_data);
+ avctx->nb_coded_side_data = 0;
+
+ av_buffer_unref(&avctx->hw_frames_ctx);
+
if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
av_opt_free(avctx->priv_data);
av_opt_free(avctx);
{
const char *codec_name;
const char *profile = NULL;
- const AVCodec *p;
char buf1[32];
int bitrate;
int new_line = 0;
AVRational display_aspect_ratio;
+ const AVCodecDescriptor *desc = avcodec_descriptor_get(enc->codec_id);
- if (enc->codec)
- p = enc->codec;
- else if (encode)
- p = avcodec_find_encoder(enc->codec_id);
- else
- p = avcodec_find_decoder(enc->codec_id);
-
- if (p) {
- codec_name = p->name;
- profile = av_get_profile_name(p, enc->profile);
+ if (desc) {
+ codec_name = desc->name;
+ profile = avcodec_profile_name(enc->codec_id, enc->profile);
} else if (enc->codec_id == AV_CODEC_ID_MPEG2TS) {
/* fake mpeg2 transport stream codec (currently not
* registered) */
return NULL;
}
+const char *avcodec_profile_name(enum AVCodecID codec_id, int profile)
+{
+ const AVCodecDescriptor *desc = avcodec_descriptor_get(codec_id);
+ const AVProfile *p;
+
+ if (profile == FF_PROFILE_UNKNOWN || !desc || !desc->profiles)
+ return NULL;
+
+ for (p = desc->profiles; p->profile != FF_PROFILE_UNKNOWN; p++)
+ if (p->profile == profile)
+ return p->name;
+
+ return NULL;
+}
+
unsigned avcodec_version(void)
{
return LIBAVCODEC_VERSION_INT;
void avcodec_flush_buffers(AVCodecContext *avctx)
{
+ avctx->internal->draining = 0;
+ avctx->internal->draining_done = 0;
+ av_frame_unref(avctx->internal->buffer_frame);
+ av_packet_unref(avctx->internal->buffer_pkt);
+ avctx->internal->buffer_pkt_valid = 0;
+
if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
ff_thread_flush(avctx);
else if (avctx->codec->flush)
}
}
-int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
+static int get_audio_frame_duration(enum AVCodecID id, int sr, int ch, int ba,
+ uint32_t tag, int bits_per_coded_sample, int frame_bytes)
{
- int id, sr, ch, ba, tag, bps;
-
- id = avctx->codec_id;
- sr = avctx->sample_rate;
- ch = avctx->channels;
- ba = avctx->block_align;
- tag = avctx->codec_tag;
- bps = av_get_exact_bits_per_sample(avctx->codec_id);
+ int bps = av_get_exact_bits_per_sample(id);
/* codecs with an exact constant bits per sample */
if (bps > 0 && ch > 0 && frame_bytes > 0)
return (frame_bytes * 8) / (bps * ch);
- bps = avctx->bits_per_coded_sample;
+ bps = bits_per_coded_sample;
/* codecs with a fixed packet duration */
switch (id) {
if (ba > 0) {
/* calc from frame_bytes, channels, and block_align */
int blocks = frame_bytes / ba;
- switch (avctx->codec_id) {
+ switch (id) {
case AV_CODEC_ID_ADPCM_IMA_WAV:
return blocks * (1 + (ba - 4 * ch) / (4 * ch) * 8);
case AV_CODEC_ID_ADPCM_IMA_DK3:
if (bps > 0) {
/* calc from frame_bytes, channels, and bits_per_coded_sample */
- switch (avctx->codec_id) {
+ switch (id) {
case AV_CODEC_ID_PCM_DVD:
return 2 * (frame_bytes / ((bps * 2 / 8) * ch));
case AV_CODEC_ID_PCM_BLURAY:
return 0;
}
+int av_get_audio_frame_duration(AVCodecContext *avctx, int frame_bytes)
+{
+ return get_audio_frame_duration(avctx->codec_id, avctx->sample_rate,
+ avctx->channels, avctx->block_align,
+ avctx->codec_tag, avctx->bits_per_coded_sample,
+ frame_bytes);
+}
+
+int av_get_audio_frame_duration2(AVCodecParameters *par, int frame_bytes)
+{
+ return get_audio_frame_duration(par->codec_id, par->sample_rate,
+ par->channels, par->block_align,
+ par->codec_tag, par->bits_per_coded_sample,
+ frame_bytes);
+}
+
#if !HAVE_THREADS
int ff_thread_init(AVCodecContext *s)
{
return p + 4;
}
+
+AVCPBProperties *av_cpb_properties_alloc(size_t *size)
+{
+ AVCPBProperties *props = av_mallocz(sizeof(AVCPBProperties));
+ if (!props)
+ return NULL;
+
+ if (size)
+ *size = sizeof(*props);
+
+ props->vbv_delay = UINT64_MAX;
+
+ return props;
+}
+
+AVCPBProperties *ff_add_cpb_side_data(AVCodecContext *avctx)
+{
+ AVPacketSideData *tmp;
+ AVCPBProperties *props;
+ size_t size;
+
+ props = av_cpb_properties_alloc(&size);
+ if (!props)
+ return NULL;
+
+ tmp = av_realloc_array(avctx->coded_side_data, avctx->nb_coded_side_data + 1, sizeof(*tmp));
+ if (!tmp) {
+ av_freep(&props);
+ return NULL;
+ }
+
+ avctx->coded_side_data = tmp;
+ avctx->nb_coded_side_data++;
+
+ avctx->coded_side_data[avctx->nb_coded_side_data - 1].type = AV_PKT_DATA_CPB_PROPERTIES;
+ avctx->coded_side_data[avctx->nb_coded_side_data - 1].data = (uint8_t*)props;
+ avctx->coded_side_data[avctx->nb_coded_side_data - 1].size = size;
+
+ return props;
+}
+
+static void codec_parameters_reset(AVCodecParameters *par)
+{
+ av_freep(&par->extradata);
+
+ memset(par, 0, sizeof(*par));
+
+ par->codec_type = AVMEDIA_TYPE_UNKNOWN;
+ par->codec_id = AV_CODEC_ID_NONE;
+ par->format = -1;
+ par->field_order = AV_FIELD_UNKNOWN;
+ par->color_range = AVCOL_RANGE_UNSPECIFIED;
+ par->color_primaries = AVCOL_PRI_UNSPECIFIED;
+ par->color_trc = AVCOL_TRC_UNSPECIFIED;
+ par->color_space = AVCOL_SPC_UNSPECIFIED;
+ par->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
+ par->sample_aspect_ratio = (AVRational){ 0, 1 };
+}
+
+AVCodecParameters *avcodec_parameters_alloc(void)
+{
+ AVCodecParameters *par = av_mallocz(sizeof(*par));
+
+ if (!par)
+ return NULL;
+ codec_parameters_reset(par);
+ return par;
+}
+
+void avcodec_parameters_free(AVCodecParameters **ppar)
+{
+ AVCodecParameters *par = *ppar;
+
+ if (!par)
+ return;
+ codec_parameters_reset(par);
+
+ av_freep(ppar);
+}
+
+int avcodec_parameters_copy(AVCodecParameters *dst, const AVCodecParameters *src)
+{
+ codec_parameters_reset(dst);
+ memcpy(dst, src, sizeof(*dst));
+
+ dst->extradata = NULL;
+ dst->extradata_size = 0;
+ if (src->extradata) {
+ dst->extradata = av_mallocz(src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
+ if (!dst->extradata)
+ return AVERROR(ENOMEM);
+ memcpy(dst->extradata, src->extradata, src->extradata_size);
+ dst->extradata_size = src->extradata_size;
+ }
+
+ return 0;
+}
+
+int avcodec_parameters_from_context(AVCodecParameters *par,
+ const AVCodecContext *codec)
+{
+ codec_parameters_reset(par);
+
+ par->codec_type = codec->codec_type;
+ par->codec_id = codec->codec_id;
+ par->codec_tag = codec->codec_tag;
+
+ par->bit_rate = codec->bit_rate;
+ par->bits_per_coded_sample = codec->bits_per_coded_sample;
+ par->profile = codec->profile;
+ par->level = codec->level;
+
+ switch (par->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
+ par->format = codec->pix_fmt;
+ par->width = codec->width;
+ par->height = codec->height;
+ par->field_order = codec->field_order;
+ par->color_range = codec->color_range;
+ par->color_primaries = codec->color_primaries;
+ par->color_trc = codec->color_trc;
+ par->color_space = codec->colorspace;
+ par->chroma_location = codec->chroma_sample_location;
+ par->sample_aspect_ratio = codec->sample_aspect_ratio;
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ par->format = codec->sample_fmt;
+ par->channel_layout = codec->channel_layout;
+ par->channels = codec->channels;
+ par->sample_rate = codec->sample_rate;
+ par->block_align = codec->block_align;
+ par->initial_padding = codec->initial_padding;
+ break;
+ }
+
+ if (codec->extradata) {
+ par->extradata = av_mallocz(codec->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
+ if (!par->extradata)
+ return AVERROR(ENOMEM);
+ memcpy(par->extradata, codec->extradata, codec->extradata_size);
+ par->extradata_size = codec->extradata_size;
+ }
+
+ return 0;
+}
+
+int avcodec_parameters_to_context(AVCodecContext *codec,
+ const AVCodecParameters *par)
+{
+ codec->codec_type = par->codec_type;
+ codec->codec_id = par->codec_id;
+ codec->codec_tag = par->codec_tag;
+
+ codec->bit_rate = par->bit_rate;
+ codec->bits_per_coded_sample = par->bits_per_coded_sample;
+ codec->profile = par->profile;
+ codec->level = par->level;
+
+ switch (par->codec_type) {
+ case AVMEDIA_TYPE_VIDEO:
+ codec->pix_fmt = par->format;
+ codec->width = par->width;
+ codec->height = par->height;
+ codec->field_order = par->field_order;
+ codec->color_range = par->color_range;
+ codec->color_primaries = par->color_primaries;
+ codec->color_trc = par->color_trc;
+ codec->colorspace = par->color_space;
+ codec->chroma_sample_location = par->chroma_location;
+ codec->sample_aspect_ratio = par->sample_aspect_ratio;
+ break;
+ case AVMEDIA_TYPE_AUDIO:
+ codec->sample_fmt = par->format;
+ codec->channel_layout = par->channel_layout;
+ codec->channels = par->channels;
+ codec->sample_rate = par->sample_rate;
+ codec->block_align = par->block_align;
+ codec->initial_padding = par->initial_padding;
+ break;
+ }
+
+ if (par->extradata) {
+ av_freep(&codec->extradata);
+ codec->extradata = av_mallocz(par->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE);
+ if (!codec->extradata)
+ return AVERROR(ENOMEM);
+ memcpy(codec->extradata, par->extradata, par->extradata_size);
+ codec->extradata_size = par->extradata_size;
+ }
+
+ return 0;
+}
projects / ffmpeg / blobdiff