diff options
Diffstat (limited to 'libs/ffvpx/libavutil/frame.c')
| -rw-r--r-- | libs/ffvpx/libavutil/frame.c | 939 |
1 files changed, 939 insertions, 0 deletions
diff --git a/libs/ffvpx/libavutil/frame.c b/libs/ffvpx/libavutil/frame.c new file mode 100644 index 000000000..00215ac29 --- /dev/null +++ b/libs/ffvpx/libavutil/frame.c @@ -0,0 +1,939 @@ +/* + * 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" + +#if FF_API_FRAME_GET_SET +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) +#endif + +#define CHECK_CHANNELS_CONSISTENCY(frame) \ + av_assert2(!(frame)->channel_layout || \ + (frame)->channels == \ + av_get_channel_layout_nb_channels((frame)->channel_layout)) + +#if FF_API_FRAME_QP +struct qp_properties { + int stride; + int type; +}; + +int av_frame_set_qp_table(AVFrame *f, AVBufferRef *buf, int stride, int qp_type) +{ + struct qp_properties *p; + AVFrameSideData *sd; + AVBufferRef *ref; + +FF_DISABLE_DEPRECATION_WARNINGS + 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; +FF_ENABLE_DEPRECATION_WARNINGS + + av_frame_remove_side_data(f, AV_FRAME_DATA_QP_TABLE_PROPERTIES); + av_frame_remove_side_data(f, AV_FRAME_DATA_QP_TABLE_DATA); + + ref = av_buffer_ref(buf); + if (!av_frame_new_side_data_from_buf(f, AV_FRAME_DATA_QP_TABLE_DATA, ref)) { + av_buffer_unref(&ref); + return AVERROR(ENOMEM); + } + + sd = av_frame_new_side_data(f, AV_FRAME_DATA_QP_TABLE_PROPERTIES, + sizeof(struct qp_properties)); + if (!sd) + return AVERROR(ENOMEM); + + p = (struct qp_properties *)sd->data; + p->stride = stride; + p->type = qp_type; + + return 0; +} + +int8_t *av_frame_get_qp_table(AVFrame *f, int *stride, int *type) +{ + AVBufferRef *buf = NULL; + + *stride = 0; + *type = 0; + +FF_DISABLE_DEPRECATION_WARNINGS + if (f->qp_table_buf) { + *stride = f->qstride; + *type = f->qscale_type; + buf = f->qp_table_buf; +FF_ENABLE_DEPRECATION_WARNINGS + } else { + AVFrameSideData *sd; + struct qp_properties *p; + sd = av_frame_get_side_data(f, AV_FRAME_DATA_QP_TABLE_PROPERTIES); + if (!sd) + return NULL; + p = (struct qp_properties *)sd->data; + sd = av_frame_get_side_data(f, AV_FRAME_DATA_QP_TABLE_DATA); + if (!sd) + return NULL; + *stride = p->stride; + *type = p->type; + buf = sd->buf; + } + + return buf ? buf->data : NULL; +} +#endif + +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 = AV_NOPTS_VALUE; +#if FF_API_PKT_PTS +FF_DISABLE_DEPRECATION_WARNINGS + frame->pkt_pts = AV_NOPTS_VALUE; +FF_ENABLE_DEPRECATION_WARNINGS +#endif + frame->best_effort_timestamp = AV_NOPTS_VALUE; + frame->pkt_duration = 0; + frame->pkt_pos = -1; + frame->pkt_size = -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; + frame->flags = 0; +} + +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]) { + if (align <= 0) + align = 32; /* STRIDE_ALIGN. Should be av_cpu_max_align() */ + + 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 = AV_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 & FF_PSEUDOPAL) { + av_buffer_unref(&frame->buf[1]); + frame->buf[1] = av_buffer_alloc(AVPALETTE_SIZE); + 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->crop_top = src->crop_top; + dst->crop_bottom = src->crop_bottom; + dst->crop_left = src->crop_left; + dst->crop_right = src->crop_right; + 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_PKT_PTS +FF_DISABLE_DEPRECATION_WARNINGS + dst->pkt_pts = src->pkt_pts; +FF_ENABLE_DEPRECATION_WARNINGS +#endif + 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); + +#if FF_API_ERROR_FRAME +FF_DISABLE_DEPRECATION_WARNINGS + memcpy(dst->error, src->error, sizeof(dst->error)); +FF_ENABLE_DEPRECATION_WARNINGS +#endif + + 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 { + AVBufferRef *ref = av_buffer_ref(sd_src->buf); + sd_dst = av_frame_new_side_data_from_buf(dst, sd_src->type, ref); + if (!sd_dst) { + av_buffer_unref(&ref); + wipe_side_data(dst); + return AVERROR(ENOMEM); + } + } + av_dict_copy(&sd_dst->metadata, sd_src->metadata, 0); + } + +#if FF_API_FRAME_QP +FF_DISABLE_DEPRECATION_WARNINGS + dst->qscale_table = NULL; + dst->qstride = 0; + dst->qscale_type = 0; + av_buffer_unref(&dst->qp_table_buf); + 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; + } + } +FF_ENABLE_DEPRECATION_WARNINGS +#endif + + av_buffer_unref(&dst->opaque_ref); + av_buffer_unref(&dst->private_ref); + if (src->opaque_ref) { + dst->opaque_ref = av_buffer_ref(src->opaque_ref); + if (!dst->opaque_ref) + return AVERROR(ENOMEM); + } + if (src->private_ref) { + dst->private_ref = av_buffer_ref(src->private_ref); + if (!dst->private_ref) + return AVERROR(ENOMEM); + } + return 0; +} + +int av_frame_ref(AVFrame *dst, const AVFrame *src) +{ + int i, ret = 0; + + av_assert1(dst->width == 0 && dst->height == 0); + av_assert1(dst->channels == 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; + } + } + } + + if (src->hw_frames_ctx) { + dst->hw_frames_ctx = av_buffer_ref(src->hw_frames_ctx); + if (!dst->hw_frames_ctx) { + 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; + + if (!frame) + return; + + 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); +#if FF_API_FRAME_QP +FF_DISABLE_DEPRECATION_WARNINGS + av_buffer_unref(&frame->qp_table_buf); +FF_ENABLE_DEPRECATION_WARNINGS +#endif + + av_buffer_unref(&frame->hw_frames_ctx); + + av_buffer_unref(&frame->opaque_ref); + av_buffer_unref(&frame->private_ref); + + get_frame_defaults(frame); +} + +void av_frame_move_ref(AVFrame *dst, AVFrame *src) +{ + av_assert1(dst->width == 0 && dst->height == 0); + av_assert1(dst->channels == 0); + + *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_from_buf(AVFrame *frame, + enum AVFrameSideDataType type, + AVBufferRef *buf) +{ + AVFrameSideData *ret, **tmp; + + if (!buf) + return NULL; + + 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; + + ret->buf = buf; + ret->data = ret->buf->data; + ret->size = buf->size; + ret->type = type; + + frame->side_data[frame->nb_side_data++] = ret; + + return ret; +} + +AVFrameSideData *av_frame_new_side_data(AVFrame *frame, + enum AVFrameSideDataType type, + int size) +{ + AVFrameSideData *ret; + AVBufferRef *buf = av_buffer_alloc(size); + ret = av_frame_new_side_data_from_buf(frame, type, buf); + if (!ret) + av_buffer_unref(&buf); + 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->channels > 0) + 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_AFD: return "Active format description"; + case AV_FRAME_DATA_MOTION_VECTORS: return "Motion vectors"; + case AV_FRAME_DATA_SKIP_SAMPLES: return "Skip samples"; + case AV_FRAME_DATA_AUDIO_SERVICE_TYPE: return "Audio service type"; + case AV_FRAME_DATA_MASTERING_DISPLAY_METADATA: return "Mastering display metadata"; + case AV_FRAME_DATA_CONTENT_LIGHT_LEVEL: return "Content light level metadata"; + case AV_FRAME_DATA_GOP_TIMECODE: return "GOP timecode"; + case AV_FRAME_DATA_ICC_PROFILE: return "ICC profile"; + case AV_FRAME_DATA_QP_TABLE_PROPERTIES: return "QP table properties"; + case AV_FRAME_DATA_QP_TABLE_DATA: return "QP table data"; + } + return NULL; +} + +static int calc_cropping_offsets(size_t offsets[4], const AVFrame *frame, + const AVPixFmtDescriptor *desc) +{ + int i, j; + + for (i = 0; frame->data[i]; i++) { + const AVComponentDescriptor *comp = NULL; + int shift_x = (i == 1 || i == 2) ? desc->log2_chroma_w : 0; + int shift_y = (i == 1 || i == 2) ? desc->log2_chroma_h : 0; + + if (desc->flags & (AV_PIX_FMT_FLAG_PAL | FF_PSEUDOPAL) && i == 1) { + offsets[i] = 0; + break; + } + + /* find any component descriptor for this plane */ + for (j = 0; j < desc->nb_components; j++) { + if (desc->comp[j].plane == i) { + comp = &desc->comp[j]; + break; + } + } + if (!comp) + return AVERROR_BUG; + + offsets[i] = (frame->crop_top >> shift_y) * frame->linesize[i] + + (frame->crop_left >> shift_x) * comp->step; + } + + return 0; +} + +int av_frame_apply_cropping(AVFrame *frame, int flags) +{ + const AVPixFmtDescriptor *desc; + size_t offsets[4]; + int i; + + if (!(frame->width > 0 && frame->height > 0)) + return AVERROR(EINVAL); + + if (frame->crop_left >= INT_MAX - frame->crop_right || + frame->crop_top >= INT_MAX - frame->crop_bottom || + (frame->crop_left + frame->crop_right) >= frame->width || + (frame->crop_top + frame->crop_bottom) >= frame->height) + return AVERROR(ERANGE); + + desc = av_pix_fmt_desc_get(frame->format); + if (!desc) + return AVERROR_BUG; + + /* Apply just the right/bottom cropping for hwaccel formats. Bitstream + * formats cannot be easily handled here either (and corresponding decoders + * should not export any cropping anyway), so do the same for those as well. + * */ + if (desc->flags & (AV_PIX_FMT_FLAG_BITSTREAM | AV_PIX_FMT_FLAG_HWACCEL)) { + frame->width -= frame->crop_right; + frame->height -= frame->crop_bottom; + frame->crop_right = 0; + frame->crop_bottom = 0; + return 0; + } + + /* calculate the offsets for each plane */ + calc_cropping_offsets(offsets, frame, desc); + + /* adjust the offsets to avoid breaking alignment */ + if (!(flags & AV_FRAME_CROP_UNALIGNED)) { + int log2_crop_align = frame->crop_left ? ff_ctz(frame->crop_left) : INT_MAX; + int min_log2_align = INT_MAX; + + for (i = 0; frame->data[i]; i++) { + int log2_align = offsets[i] ? ff_ctz(offsets[i]) : INT_MAX; + min_log2_align = FFMIN(log2_align, min_log2_align); + } + + /* we assume, and it should always be true, that the data alignment is + * related to the cropping alignment by a constant power-of-2 factor */ + if (log2_crop_align < min_log2_align) + return AVERROR_BUG; + + if (min_log2_align < 5) { + frame->crop_left &= ~((1 << (5 + log2_crop_align - min_log2_align)) - 1); + calc_cropping_offsets(offsets, frame, desc); + } + } + + for (i = 0; frame->data[i]; i++) + frame->data[i] += offsets[i]; + + frame->width -= (frame->crop_left + frame->crop_right); + frame->height -= (frame->crop_top + frame->crop_bottom); + frame->crop_left = 0; + frame->crop_right = 0; + frame->crop_top = 0; + frame->crop_bottom = 0; + + return 0; +} |