| /* |
| * |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "channel_layout.h" |
| #include "avassert.h" |
| #include "buffer.h" |
| #include "common.h" |
| #include "dict.h" |
| #include "frame.h" |
| #include "imgutils.h" |
| #include "mem.h" |
| #include "samplefmt.h" |
| |
| MAKE_ACCESSORS(AVFrame, frame, int64_t, best_effort_timestamp) |
| MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_duration) |
| MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_pos) |
| MAKE_ACCESSORS(AVFrame, frame, int64_t, channel_layout) |
| MAKE_ACCESSORS(AVFrame, frame, int, channels) |
| MAKE_ACCESSORS(AVFrame, frame, int, sample_rate) |
| MAKE_ACCESSORS(AVFrame, frame, AVDictionary *, metadata) |
| MAKE_ACCESSORS(AVFrame, frame, int, decode_error_flags) |
| MAKE_ACCESSORS(AVFrame, frame, int, pkt_size) |
| MAKE_ACCESSORS(AVFrame, frame, enum AVColorSpace, colorspace) |
| MAKE_ACCESSORS(AVFrame, frame, enum AVColorRange, color_range) |
| |
| #define CHECK_CHANNELS_CONSISTENCY(frame) \ |
| av_assert2(!(frame)->channel_layout || \ |
| (frame)->channels == \ |
| av_get_channel_layout_nb_channels((frame)->channel_layout)) |
| |
| AVDictionary **avpriv_frame_get_metadatap(AVFrame *frame) {return &frame->metadata;}; |
| |
| int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int qp_type) |
| { |
| av_buffer_unref(&f->qp_table_buf); |
| |
| f->qp_table_buf = buf; |
| |
| f->qscale_table = buf->data; |
| f->qstride = stride; |
| f->qscale_type = qp_type; |
| |
| return 0; |
| } |
| |
| int8_t *av_frame_get_qp_table(AVFrame *f, int *stride, int *type) |
| { |
| *stride = f->qstride; |
| *type = f->qscale_type; |
| |
| if (!f->qp_table_buf) |
| return NULL; |
| |
| return f->qp_table_buf->data; |
| } |
| |
| const char *av_get_colorspace_name(enum AVColorSpace val) |
| { |
| static const char * const name[] = { |
| [AVCOL_SPC_RGB] = "GBR", |
| [AVCOL_SPC_BT709] = "bt709", |
| [AVCOL_SPC_FCC] = "fcc", |
| [AVCOL_SPC_BT470BG] = "bt470bg", |
| [AVCOL_SPC_SMPTE170M] = "smpte170m", |
| [AVCOL_SPC_SMPTE240M] = "smpte240m", |
| [AVCOL_SPC_YCOCG] = "YCgCo", |
| }; |
| if ((unsigned)val >= FF_ARRAY_ELEMS(name)) |
| return NULL; |
| return name[val]; |
| } |
| |
| static void get_frame_defaults(AVFrame *frame) |
| { |
| if (frame->extended_data != frame->data) |
| av_freep(&frame->extended_data); |
| |
| memset(frame, 0, sizeof(*frame)); |
| |
| frame->pts = |
| frame->pkt_dts = |
| frame->pkt_pts = AV_NOPTS_VALUE; |
| av_frame_set_best_effort_timestamp(frame, AV_NOPTS_VALUE); |
| av_frame_set_pkt_duration (frame, 0); |
| av_frame_set_pkt_pos (frame, -1); |
| av_frame_set_pkt_size (frame, -1); |
| frame->key_frame = 1; |
| frame->sample_aspect_ratio = (AVRational){ 0, 1 }; |
| frame->format = -1; /* unknown */ |
| frame->extended_data = frame->data; |
| frame->color_primaries = AVCOL_PRI_UNSPECIFIED; |
| frame->color_trc = AVCOL_TRC_UNSPECIFIED; |
| frame->colorspace = AVCOL_SPC_UNSPECIFIED; |
| frame->color_range = AVCOL_RANGE_UNSPECIFIED; |
| frame->chroma_location = AVCHROMA_LOC_UNSPECIFIED; |
| } |
| |
| static void free_side_data(AVFrameSideData **ptr_sd) |
| { |
| AVFrameSideData *sd = *ptr_sd; |
| |
| av_buffer_unref(&sd->buf); |
| av_dict_free(&sd->metadata); |
| av_freep(ptr_sd); |
| } |
| |
| static void wipe_side_data(AVFrame *frame) |
| { |
| int i; |
| |
| for (i = 0; i < frame->nb_side_data; i++) { |
| free_side_data(&frame->side_data[i]); |
| } |
| frame->nb_side_data = 0; |
| |
| av_freep(&frame->side_data); |
| } |
| |
| AVFrame *av_frame_alloc(void) |
| { |
| AVFrame *frame = av_mallocz(sizeof(*frame)); |
| |
| if (!frame) |
| return NULL; |
| |
| frame->extended_data = NULL; |
| get_frame_defaults(frame); |
| |
| return frame; |
| } |
| |
| void av_frame_free(AVFrame **frame) |
| { |
| if (!frame || !*frame) |
| return; |
| |
| av_frame_unref(*frame); |
| av_freep(frame); |
| } |
| |
| static int get_video_buffer(AVFrame *frame, int align) |
| { |
| const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format); |
| int ret, i; |
| |
| if (!desc) |
| return AVERROR(EINVAL); |
| |
| if ((ret = av_image_check_size(frame->width, frame->height, 0, NULL)) < 0) |
| return ret; |
| |
| if (!frame->linesize[0]) { |
| for(i=1; i<=align; i+=i) { |
| ret = av_image_fill_linesizes(frame->linesize, frame->format, |
| FFALIGN(frame->width, i)); |
| if (ret < 0) |
| return ret; |
| if (!(frame->linesize[0] & (align-1))) |
| break; |
| } |
| |
| for (i = 0; i < 4 && frame->linesize[i]; i++) |
| frame->linesize[i] = FFALIGN(frame->linesize[i], align); |
| } |
| |
| for (i = 0; i < 4 && frame->linesize[i]; i++) { |
| int h = FFALIGN(frame->height, 32); |
| if (i == 1 || i == 2) |
| h = FF_CEIL_RSHIFT(h, desc->log2_chroma_h); |
| |
| frame->buf[i] = av_buffer_alloc(frame->linesize[i] * h + 16 + 16/*STRIDE_ALIGN*/ - 1); |
| if (!frame->buf[i]) |
| goto fail; |
| |
| frame->data[i] = frame->buf[i]->data; |
| } |
| if (desc->flags & AV_PIX_FMT_FLAG_PAL || desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL) { |
| av_buffer_unref(&frame->buf[1]); |
| frame->buf[1] = av_buffer_alloc(1024); |
| if (!frame->buf[1]) |
| goto fail; |
| frame->data[1] = frame->buf[1]->data; |
| } |
| |
| frame->extended_data = frame->data; |
| |
| return 0; |
| fail: |
| av_frame_unref(frame); |
| return AVERROR(ENOMEM); |
| } |
| |
| static int get_audio_buffer(AVFrame *frame, int align) |
| { |
| int channels; |
| int planar = av_sample_fmt_is_planar(frame->format); |
| int planes; |
| int ret, i; |
| |
| if (!frame->channels) |
| frame->channels = av_get_channel_layout_nb_channels(frame->channel_layout); |
| |
| channels = frame->channels; |
| planes = planar ? channels : 1; |
| |
| CHECK_CHANNELS_CONSISTENCY(frame); |
| if (!frame->linesize[0]) { |
| ret = av_samples_get_buffer_size(&frame->linesize[0], channels, |
| frame->nb_samples, frame->format, |
| align); |
| if (ret < 0) |
| return ret; |
| } |
| |
| if (planes > AV_NUM_DATA_POINTERS) { |
| frame->extended_data = av_mallocz_array(planes, |
| sizeof(*frame->extended_data)); |
| frame->extended_buf = av_mallocz_array((planes - AV_NUM_DATA_POINTERS), |
| sizeof(*frame->extended_buf)); |
| if (!frame->extended_data || !frame->extended_buf) { |
| av_freep(&frame->extended_data); |
| av_freep(&frame->extended_buf); |
| return AVERROR(ENOMEM); |
| } |
| frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS; |
| } else |
| frame->extended_data = frame->data; |
| |
| for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) { |
| frame->buf[i] = av_buffer_alloc(frame->linesize[0]); |
| if (!frame->buf[i]) { |
| av_frame_unref(frame); |
| return AVERROR(ENOMEM); |
| } |
| frame->extended_data[i] = frame->data[i] = frame->buf[i]->data; |
| } |
| for (i = 0; i < planes - AV_NUM_DATA_POINTERS; i++) { |
| frame->extended_buf[i] = av_buffer_alloc(frame->linesize[0]); |
| if (!frame->extended_buf[i]) { |
| av_frame_unref(frame); |
| return AVERROR(ENOMEM); |
| } |
| frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data; |
| } |
| return 0; |
| |
| } |
| |
| int av_frame_get_buffer(AVFrame *frame, int align) |
| { |
| if (frame->format < 0) |
| return AVERROR(EINVAL); |
| |
| if (frame->width > 0 && frame->height > 0) |
| return get_video_buffer(frame, align); |
| else if (frame->nb_samples > 0 && (frame->channel_layout || frame->channels > 0)) |
| return get_audio_buffer(frame, align); |
| |
| return AVERROR(EINVAL); |
| } |
| |
| static int frame_copy_props(AVFrame *dst, const AVFrame *src, int force_copy) |
| { |
| int i; |
| |
| dst->key_frame = src->key_frame; |
| dst->pict_type = src->pict_type; |
| dst->sample_aspect_ratio = src->sample_aspect_ratio; |
| dst->pts = src->pts; |
| dst->repeat_pict = src->repeat_pict; |
| dst->interlaced_frame = src->interlaced_frame; |
| dst->top_field_first = src->top_field_first; |
| dst->palette_has_changed = src->palette_has_changed; |
| dst->sample_rate = src->sample_rate; |
| dst->opaque = src->opaque; |
| #if FF_API_AVFRAME_LAVC |
| dst->type = src->type; |
| #endif |
| dst->pkt_pts = src->pkt_pts; |
| dst->pkt_dts = src->pkt_dts; |
| dst->pkt_pos = src->pkt_pos; |
| dst->pkt_size = src->pkt_size; |
| dst->pkt_duration = src->pkt_duration; |
| dst->reordered_opaque = src->reordered_opaque; |
| dst->quality = src->quality; |
| dst->best_effort_timestamp = src->best_effort_timestamp; |
| dst->coded_picture_number = src->coded_picture_number; |
| dst->display_picture_number = src->display_picture_number; |
| dst->flags = src->flags; |
| dst->decode_error_flags = src->decode_error_flags; |
| dst->color_primaries = src->color_primaries; |
| dst->color_trc = src->color_trc; |
| dst->colorspace = src->colorspace; |
| dst->color_range = src->color_range; |
| dst->chroma_location = src->chroma_location; |
| |
| av_dict_copy(&dst->metadata, src->metadata, 0); |
| |
| memcpy(dst->error, src->error, sizeof(dst->error)); |
| |
| for (i = 0; i < src->nb_side_data; i++) { |
| const AVFrameSideData *sd_src = src->side_data[i]; |
| AVFrameSideData *sd_dst; |
| if ( sd_src->type == AV_FRAME_DATA_PANSCAN |
| && (src->width != dst->width || src->height != dst->height)) |
| continue; |
| if (force_copy) { |
| sd_dst = av_frame_new_side_data(dst, sd_src->type, |
| sd_src->size); |
| if (!sd_dst) { |
| wipe_side_data(dst); |
| return AVERROR(ENOMEM); |
| } |
| memcpy(sd_dst->data, sd_src->data, sd_src->size); |
| } else { |
| sd_dst = av_frame_new_side_data(dst, sd_src->type, 0); |
| if (!sd_dst) { |
| wipe_side_data(dst); |
| return AVERROR(ENOMEM); |
| } |
| sd_dst->buf = av_buffer_ref(sd_src->buf); |
| if (!sd_dst->buf) { |
| wipe_side_data(dst); |
| return AVERROR(ENOMEM); |
| } |
| sd_dst->data = sd_dst->buf->data; |
| sd_dst->size = sd_dst->buf->size; |
| } |
| av_dict_copy(&sd_dst->metadata, sd_src->metadata, 0); |
| } |
| |
| dst->qscale_table = NULL; |
| dst->qstride = 0; |
| dst->qscale_type = 0; |
| if (src->qp_table_buf) { |
| dst->qp_table_buf = av_buffer_ref(src->qp_table_buf); |
| if (dst->qp_table_buf) { |
| dst->qscale_table = dst->qp_table_buf->data; |
| dst->qstride = src->qstride; |
| dst->qscale_type = src->qscale_type; |
| } |
| } |
| |
| return 0; |
| } |
| |
| int av_frame_ref(AVFrame *dst, const AVFrame *src) |
| { |
| int i, ret = 0; |
| |
| dst->format = src->format; |
| dst->width = src->width; |
| dst->height = src->height; |
| dst->channels = src->channels; |
| dst->channel_layout = src->channel_layout; |
| dst->nb_samples = src->nb_samples; |
| |
| ret = frame_copy_props(dst, src, 0); |
| if (ret < 0) |
| return ret; |
| |
| /* duplicate the frame data if it's not refcounted */ |
| if (!src->buf[0]) { |
| ret = av_frame_get_buffer(dst, 32); |
| if (ret < 0) |
| return ret; |
| |
| ret = av_frame_copy(dst, src); |
| if (ret < 0) |
| av_frame_unref(dst); |
| |
| return ret; |
| } |
| |
| /* ref the buffers */ |
| for (i = 0; i < FF_ARRAY_ELEMS(src->buf); i++) { |
| if (!src->buf[i]) |
| continue; |
| dst->buf[i] = av_buffer_ref(src->buf[i]); |
| if (!dst->buf[i]) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| } |
| |
| if (src->extended_buf) { |
| dst->extended_buf = av_mallocz_array(sizeof(*dst->extended_buf), |
| src->nb_extended_buf); |
| if (!dst->extended_buf) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| dst->nb_extended_buf = src->nb_extended_buf; |
| |
| for (i = 0; i < src->nb_extended_buf; i++) { |
| dst->extended_buf[i] = av_buffer_ref(src->extended_buf[i]); |
| if (!dst->extended_buf[i]) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| } |
| } |
| |
| /* duplicate extended data */ |
| if (src->extended_data != src->data) { |
| int ch = src->channels; |
| |
| if (!ch) { |
| ret = AVERROR(EINVAL); |
| goto fail; |
| } |
| CHECK_CHANNELS_CONSISTENCY(src); |
| |
| dst->extended_data = av_malloc_array(sizeof(*dst->extended_data), ch); |
| if (!dst->extended_data) { |
| ret = AVERROR(ENOMEM); |
| goto fail; |
| } |
| memcpy(dst->extended_data, src->extended_data, sizeof(*src->extended_data) * ch); |
| } else |
| dst->extended_data = dst->data; |
| |
| memcpy(dst->data, src->data, sizeof(src->data)); |
| memcpy(dst->linesize, src->linesize, sizeof(src->linesize)); |
| |
| return 0; |
| |
| fail: |
| av_frame_unref(dst); |
| return ret; |
| } |
| |
| AVFrame *av_frame_clone(const AVFrame *src) |
| { |
| AVFrame *ret = av_frame_alloc(); |
| |
| if (!ret) |
| return NULL; |
| |
| if (av_frame_ref(ret, src) < 0) |
| av_frame_free(&ret); |
| |
| return ret; |
| } |
| |
| void av_frame_unref(AVFrame *frame) |
| { |
| int i; |
| |
| wipe_side_data(frame); |
| |
| for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++) |
| av_buffer_unref(&frame->buf[i]); |
| for (i = 0; i < frame->nb_extended_buf; i++) |
| av_buffer_unref(&frame->extended_buf[i]); |
| av_freep(&frame->extended_buf); |
| av_dict_free(&frame->metadata); |
| av_buffer_unref(&frame->qp_table_buf); |
| |
| get_frame_defaults(frame); |
| } |
| |
| void av_frame_move_ref(AVFrame *dst, AVFrame *src) |
| { |
| *dst = *src; |
| if (src->extended_data == src->data) |
| dst->extended_data = dst->data; |
| memset(src, 0, sizeof(*src)); |
| get_frame_defaults(src); |
| } |
| |
| int av_frame_is_writable(AVFrame *frame) |
| { |
| int i, ret = 1; |
| |
| /* assume non-refcounted frames are not writable */ |
| if (!frame->buf[0]) |
| return 0; |
| |
| for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++) |
| if (frame->buf[i]) |
| ret &= !!av_buffer_is_writable(frame->buf[i]); |
| for (i = 0; i < frame->nb_extended_buf; i++) |
| ret &= !!av_buffer_is_writable(frame->extended_buf[i]); |
| |
| return ret; |
| } |
| |
| int av_frame_make_writable(AVFrame *frame) |
| { |
| AVFrame tmp; |
| int ret; |
| |
| if (!frame->buf[0]) |
| return AVERROR(EINVAL); |
| |
| if (av_frame_is_writable(frame)) |
| return 0; |
| |
| memset(&tmp, 0, sizeof(tmp)); |
| tmp.format = frame->format; |
| tmp.width = frame->width; |
| tmp.height = frame->height; |
| tmp.channels = frame->channels; |
| tmp.channel_layout = frame->channel_layout; |
| tmp.nb_samples = frame->nb_samples; |
| ret = av_frame_get_buffer(&tmp, 32); |
| if (ret < 0) |
| return ret; |
| |
| ret = av_frame_copy(&tmp, frame); |
| if (ret < 0) { |
| av_frame_unref(&tmp); |
| return ret; |
| } |
| |
| ret = av_frame_copy_props(&tmp, frame); |
| if (ret < 0) { |
| av_frame_unref(&tmp); |
| return ret; |
| } |
| |
| av_frame_unref(frame); |
| |
| *frame = tmp; |
| if (tmp.data == tmp.extended_data) |
| frame->extended_data = frame->data; |
| |
| return 0; |
| } |
| |
| int av_frame_copy_props(AVFrame *dst, const AVFrame *src) |
| { |
| return frame_copy_props(dst, src, 1); |
| } |
| |
| AVBufferRef *av_frame_get_plane_buffer(AVFrame *frame, int plane) |
| { |
| uint8_t *data; |
| int planes, i; |
| |
| if (frame->nb_samples) { |
| int channels = frame->channels; |
| if (!channels) |
| return NULL; |
| CHECK_CHANNELS_CONSISTENCY(frame); |
| planes = av_sample_fmt_is_planar(frame->format) ? channels : 1; |
| } else |
| planes = 4; |
| |
| if (plane < 0 || plane >= planes || !frame->extended_data[plane]) |
| return NULL; |
| data = frame->extended_data[plane]; |
| |
| for (i = 0; i < FF_ARRAY_ELEMS(frame->buf) && frame->buf[i]; i++) { |
| AVBufferRef *buf = frame->buf[i]; |
| if (data >= buf->data && data < buf->data + buf->size) |
| return buf; |
| } |
| for (i = 0; i < frame->nb_extended_buf; i++) { |
| AVBufferRef *buf = frame->extended_buf[i]; |
| if (data >= buf->data && data < buf->data + buf->size) |
| return buf; |
| } |
| return NULL; |
| } |
| |
| AVFrameSideData *av_frame_new_side_data(AVFrame *frame, |
| enum AVFrameSideDataType type, |
| int size) |
| { |
| AVFrameSideData *ret, **tmp; |
| |
| if (frame->nb_side_data > INT_MAX / sizeof(*frame->side_data) - 1) |
| return NULL; |
| |
| tmp = av_realloc(frame->side_data, |
| (frame->nb_side_data + 1) * sizeof(*frame->side_data)); |
| if (!tmp) |
| return NULL; |
| frame->side_data = tmp; |
| |
| ret = av_mallocz(sizeof(*ret)); |
| if (!ret) |
| return NULL; |
| |
| if (size > 0) { |
| ret->buf = av_buffer_alloc(size); |
| if (!ret->buf) { |
| av_freep(&ret); |
| return NULL; |
| } |
| |
| ret->data = ret->buf->data; |
| ret->size = size; |
| } |
| ret->type = type; |
| |
| frame->side_data[frame->nb_side_data++] = ret; |
| |
| return ret; |
| } |
| |
| AVFrameSideData *av_frame_get_side_data(const AVFrame *frame, |
| enum AVFrameSideDataType type) |
| { |
| int i; |
| |
| for (i = 0; i < frame->nb_side_data; i++) { |
| if (frame->side_data[i]->type == type) |
| return frame->side_data[i]; |
| } |
| return NULL; |
| } |
| |
| static int frame_copy_video(AVFrame *dst, const AVFrame *src) |
| { |
| const uint8_t *src_data[4]; |
| int i, planes; |
| |
| if (dst->width < src->width || |
| dst->height < src->height) |
| return AVERROR(EINVAL); |
| |
| planes = av_pix_fmt_count_planes(dst->format); |
| for (i = 0; i < planes; i++) |
| if (!dst->data[i] || !src->data[i]) |
| return AVERROR(EINVAL); |
| |
| memcpy(src_data, src->data, sizeof(src_data)); |
| av_image_copy(dst->data, dst->linesize, |
| src_data, src->linesize, |
| dst->format, src->width, src->height); |
| |
| return 0; |
| } |
| |
| static int frame_copy_audio(AVFrame *dst, const AVFrame *src) |
| { |
| int planar = av_sample_fmt_is_planar(dst->format); |
| int channels = dst->channels; |
| int planes = planar ? channels : 1; |
| int i; |
| |
| if (dst->nb_samples != src->nb_samples || |
| dst->channels != src->channels || |
| dst->channel_layout != src->channel_layout) |
| return AVERROR(EINVAL); |
| |
| CHECK_CHANNELS_CONSISTENCY(src); |
| |
| for (i = 0; i < planes; i++) |
| if (!dst->extended_data[i] || !src->extended_data[i]) |
| return AVERROR(EINVAL); |
| |
| av_samples_copy(dst->extended_data, src->extended_data, 0, 0, |
| dst->nb_samples, channels, dst->format); |
| |
| return 0; |
| } |
| |
| int av_frame_copy(AVFrame *dst, const AVFrame *src) |
| { |
| if (dst->format != src->format || dst->format < 0) |
| return AVERROR(EINVAL); |
| |
| if (dst->width > 0 && dst->height > 0) |
| return frame_copy_video(dst, src); |
| else if (dst->nb_samples > 0 && dst->channel_layout) |
| return frame_copy_audio(dst, src); |
| |
| return AVERROR(EINVAL); |
| } |
| |
| void av_frame_remove_side_data(AVFrame *frame, enum AVFrameSideDataType type) |
| { |
| int i; |
| |
| for (i = 0; i < frame->nb_side_data; i++) { |
| AVFrameSideData *sd = frame->side_data[i]; |
| if (sd->type == type) { |
| free_side_data(&frame->side_data[i]); |
| frame->side_data[i] = frame->side_data[frame->nb_side_data - 1]; |
| frame->nb_side_data--; |
| } |
| } |
| } |
| |
| const char *av_frame_side_data_name(enum AVFrameSideDataType type) |
| { |
| switch(type) { |
| case AV_FRAME_DATA_PANSCAN: return "AVPanScan"; |
| case AV_FRAME_DATA_A53_CC: return "ATSC A53 Part 4 Closed Captions"; |
| case AV_FRAME_DATA_STEREO3D: return "Stereoscopic 3d metadata"; |
| case AV_FRAME_DATA_MATRIXENCODING: return "AVMatrixEncoding"; |
| case AV_FRAME_DATA_DOWNMIX_INFO: return "Metadata relevant to a downmix procedure"; |
| case AV_FRAME_DATA_REPLAYGAIN: return "AVReplayGain"; |
| case AV_FRAME_DATA_DISPLAYMATRIX: return "3x3 displaymatrix"; |
| case AV_FRAME_DATA_MOTION_VECTORS: return "Motion vectors"; |
| } |
| return NULL; |
| } |