2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #include "channel_layout.h"
27 #include "samplefmt.h"
28 #include "hwcontext.h"
30 #if FF_API_FRAME_GET_SET
31 MAKE_ACCESSORS(AVFrame, frame, int64_t, best_effort_timestamp)
32 MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_duration)
33 MAKE_ACCESSORS(AVFrame, frame, int64_t, pkt_pos)
34 MAKE_ACCESSORS(AVFrame, frame, int64_t, channel_layout)
35 MAKE_ACCESSORS(AVFrame, frame, int, channels)
36 MAKE_ACCESSORS(AVFrame, frame, int, sample_rate)
37 MAKE_ACCESSORS(AVFrame, frame, AVDictionary *, metadata)
38 MAKE_ACCESSORS(AVFrame, frame, int, decode_error_flags)
39 MAKE_ACCESSORS(AVFrame, frame, int, pkt_size)
40 MAKE_ACCESSORS(AVFrame, frame, enum AVColorSpace, colorspace)
41 MAKE_ACCESSORS(AVFrame, frame, enum AVColorRange, color_range)
44 #define CHECK_CHANNELS_CONSISTENCY(frame) \
45 av_assert2(!(frame)->channel_layout || \
46 (frame)->channels == \
47 av_get_channel_layout_nb_channels((frame)->channel_layout))
49 #if FF_API_COLORSPACE_NAME
50 const char *av_get_colorspace_name(enum AVColorSpace val)
52 static const char * const name[] = {
53 [AVCOL_SPC_RGB] = "GBR",
54 [AVCOL_SPC_BT709] = "bt709",
55 [AVCOL_SPC_FCC] = "fcc",
56 [AVCOL_SPC_BT470BG] = "bt470bg",
57 [AVCOL_SPC_SMPTE170M] = "smpte170m",
58 [AVCOL_SPC_SMPTE240M] = "smpte240m",
59 [AVCOL_SPC_YCOCG] = "YCgCo",
61 if ((unsigned)val >= FF_ARRAY_ELEMS(name))
66 static void get_frame_defaults(AVFrame *frame)
68 if (frame->extended_data != frame->data)
69 av_freep(&frame->extended_data);
71 memset(frame, 0, sizeof(*frame));
74 frame->pkt_dts = AV_NOPTS_VALUE;
76 FF_DISABLE_DEPRECATION_WARNINGS
77 frame->pkt_pts = AV_NOPTS_VALUE;
78 FF_ENABLE_DEPRECATION_WARNINGS
80 frame->best_effort_timestamp = AV_NOPTS_VALUE;
81 frame->pkt_duration = 0;
85 frame->sample_aspect_ratio = (AVRational){ 0, 1 };
86 frame->format = -1; /* unknown */
87 frame->extended_data = frame->data;
88 frame->color_primaries = AVCOL_PRI_UNSPECIFIED;
89 frame->color_trc = AVCOL_TRC_UNSPECIFIED;
90 frame->colorspace = AVCOL_SPC_UNSPECIFIED;
91 frame->color_range = AVCOL_RANGE_UNSPECIFIED;
92 frame->chroma_location = AVCHROMA_LOC_UNSPECIFIED;
96 static void free_side_data(AVFrameSideData **ptr_sd)
98 AVFrameSideData *sd = *ptr_sd;
100 av_buffer_unref(&sd->buf);
101 av_dict_free(&sd->metadata);
105 static void wipe_side_data(AVFrame *frame)
109 for (i = 0; i < frame->nb_side_data; i++) {
110 free_side_data(&frame->side_data[i]);
112 frame->nb_side_data = 0;
114 av_freep(&frame->side_data);
117 AVFrame *av_frame_alloc(void)
119 AVFrame *frame = av_mallocz(sizeof(*frame));
124 frame->extended_data = NULL;
125 get_frame_defaults(frame);
130 void av_frame_free(AVFrame **frame)
132 if (!frame || !*frame)
135 av_frame_unref(*frame);
139 static int get_video_buffer(AVFrame *frame, int align)
141 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
142 int ret, i, padded_height, total_size;
143 int plane_padding = FFMAX(16 + 16/*STRIDE_ALIGN*/, align);
144 ptrdiff_t linesizes[4];
148 return AVERROR(EINVAL);
150 if ((ret = av_image_check_size(frame->width, frame->height, 0, NULL)) < 0)
153 if (!frame->linesize[0]) {
155 align = 32; /* STRIDE_ALIGN. Should be av_cpu_max_align() */
157 for(i=1; i<=align; i+=i) {
158 ret = av_image_fill_linesizes(frame->linesize, frame->format,
159 FFALIGN(frame->width, i));
162 if (!(frame->linesize[0] & (align-1)))
166 for (i = 0; i < 4 && frame->linesize[i]; i++)
167 frame->linesize[i] = FFALIGN(frame->linesize[i], align);
170 for (i = 0; i < 4; i++)
171 linesizes[i] = frame->linesize[i];
173 padded_height = FFALIGN(frame->height, 32);
174 if ((ret = av_image_fill_plane_sizes(sizes, frame->format,
175 padded_height, linesizes)) < 0)
178 total_size = 4*plane_padding;
179 for (i = 0; i < 4; i++) {
180 if (sizes[i] > INT_MAX - total_size)
181 return AVERROR(EINVAL);
182 total_size += sizes[i];
185 frame->buf[0] = av_buffer_alloc(total_size);
186 if (!frame->buf[0]) {
187 ret = AVERROR(ENOMEM);
191 if ((ret = av_image_fill_pointers(frame->data, frame->format, padded_height,
192 frame->buf[0]->data, frame->linesize)) < 0)
195 for (i = 1; i < 4; i++) {
197 frame->data[i] += i * plane_padding;
200 frame->extended_data = frame->data;
204 av_frame_unref(frame);
208 static int get_audio_buffer(AVFrame *frame, int align)
211 int planar = av_sample_fmt_is_planar(frame->format);
215 if (!frame->channels)
216 frame->channels = av_get_channel_layout_nb_channels(frame->channel_layout);
218 channels = frame->channels;
219 planes = planar ? channels : 1;
221 CHECK_CHANNELS_CONSISTENCY(frame);
222 if (!frame->linesize[0]) {
223 ret = av_samples_get_buffer_size(&frame->linesize[0], channels,
224 frame->nb_samples, frame->format,
230 if (planes > AV_NUM_DATA_POINTERS) {
231 frame->extended_data = av_mallocz_array(planes,
232 sizeof(*frame->extended_data));
233 frame->extended_buf = av_mallocz_array((planes - AV_NUM_DATA_POINTERS),
234 sizeof(*frame->extended_buf));
235 if (!frame->extended_data || !frame->extended_buf) {
236 av_freep(&frame->extended_data);
237 av_freep(&frame->extended_buf);
238 return AVERROR(ENOMEM);
240 frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
242 frame->extended_data = frame->data;
244 for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) {
245 frame->buf[i] = av_buffer_alloc(frame->linesize[0]);
246 if (!frame->buf[i]) {
247 av_frame_unref(frame);
248 return AVERROR(ENOMEM);
250 frame->extended_data[i] = frame->data[i] = frame->buf[i]->data;
252 for (i = 0; i < planes - AV_NUM_DATA_POINTERS; i++) {
253 frame->extended_buf[i] = av_buffer_alloc(frame->linesize[0]);
254 if (!frame->extended_buf[i]) {
255 av_frame_unref(frame);
256 return AVERROR(ENOMEM);
258 frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data;
264 int av_frame_get_buffer(AVFrame *frame, int align)
266 if (frame->format < 0)
267 return AVERROR(EINVAL);
269 if (frame->width > 0 && frame->height > 0)
270 return get_video_buffer(frame, align);
271 else if (frame->nb_samples > 0 && (frame->channel_layout || frame->channels > 0))
272 return get_audio_buffer(frame, align);
274 return AVERROR(EINVAL);
277 static int frame_copy_props(AVFrame *dst, const AVFrame *src, int force_copy)
281 dst->key_frame = src->key_frame;
282 dst->pict_type = src->pict_type;
283 dst->sample_aspect_ratio = src->sample_aspect_ratio;
284 dst->crop_top = src->crop_top;
285 dst->crop_bottom = src->crop_bottom;
286 dst->crop_left = src->crop_left;
287 dst->crop_right = src->crop_right;
289 dst->repeat_pict = src->repeat_pict;
290 dst->interlaced_frame = src->interlaced_frame;
291 dst->top_field_first = src->top_field_first;
292 dst->palette_has_changed = src->palette_has_changed;
293 dst->sample_rate = src->sample_rate;
294 dst->opaque = src->opaque;
296 FF_DISABLE_DEPRECATION_WARNINGS
297 dst->pkt_pts = src->pkt_pts;
298 FF_ENABLE_DEPRECATION_WARNINGS
300 dst->pkt_dts = src->pkt_dts;
301 dst->pkt_pos = src->pkt_pos;
302 dst->pkt_size = src->pkt_size;
303 dst->pkt_duration = src->pkt_duration;
304 dst->reordered_opaque = src->reordered_opaque;
305 dst->quality = src->quality;
306 dst->best_effort_timestamp = src->best_effort_timestamp;
307 dst->coded_picture_number = src->coded_picture_number;
308 dst->display_picture_number = src->display_picture_number;
309 dst->flags = src->flags;
310 dst->decode_error_flags = src->decode_error_flags;
311 dst->color_primaries = src->color_primaries;
312 dst->color_trc = src->color_trc;
313 dst->colorspace = src->colorspace;
314 dst->color_range = src->color_range;
315 dst->chroma_location = src->chroma_location;
317 av_dict_copy(&dst->metadata, src->metadata, 0);
319 for (i = 0; i < src->nb_side_data; i++) {
320 const AVFrameSideData *sd_src = src->side_data[i];
321 AVFrameSideData *sd_dst;
322 if ( sd_src->type == AV_FRAME_DATA_PANSCAN
323 && (src->width != dst->width || src->height != dst->height))
326 sd_dst = av_frame_new_side_data(dst, sd_src->type,
330 return AVERROR(ENOMEM);
332 memcpy(sd_dst->data, sd_src->data, sd_src->size);
334 AVBufferRef *ref = av_buffer_ref(sd_src->buf);
335 sd_dst = av_frame_new_side_data_from_buf(dst, sd_src->type, ref);
337 av_buffer_unref(&ref);
339 return AVERROR(ENOMEM);
342 av_dict_copy(&sd_dst->metadata, sd_src->metadata, 0);
345 ret = av_buffer_replace(&dst->opaque_ref, src->opaque_ref);
346 ret |= av_buffer_replace(&dst->private_ref, src->private_ref);
350 int av_frame_ref(AVFrame *dst, const AVFrame *src)
354 av_assert1(dst->width == 0 && dst->height == 0);
355 av_assert1(dst->channels == 0);
357 dst->format = src->format;
358 dst->width = src->width;
359 dst->height = src->height;
360 dst->channels = src->channels;
361 dst->channel_layout = src->channel_layout;
362 dst->nb_samples = src->nb_samples;
364 ret = frame_copy_props(dst, src, 0);
368 /* duplicate the frame data if it's not refcounted */
370 ret = av_frame_get_buffer(dst, 0);
374 ret = av_frame_copy(dst, src);
381 /* ref the buffers */
382 for (i = 0; i < FF_ARRAY_ELEMS(src->buf); i++) {
385 dst->buf[i] = av_buffer_ref(src->buf[i]);
387 ret = AVERROR(ENOMEM);
392 if (src->extended_buf) {
393 dst->extended_buf = av_mallocz_array(sizeof(*dst->extended_buf),
394 src->nb_extended_buf);
395 if (!dst->extended_buf) {
396 ret = AVERROR(ENOMEM);
399 dst->nb_extended_buf = src->nb_extended_buf;
401 for (i = 0; i < src->nb_extended_buf; i++) {
402 dst->extended_buf[i] = av_buffer_ref(src->extended_buf[i]);
403 if (!dst->extended_buf[i]) {
404 ret = AVERROR(ENOMEM);
410 if (src->hw_frames_ctx) {
411 dst->hw_frames_ctx = av_buffer_ref(src->hw_frames_ctx);
412 if (!dst->hw_frames_ctx) {
413 ret = AVERROR(ENOMEM);
418 /* duplicate extended data */
419 if (src->extended_data != src->data) {
420 int ch = src->channels;
423 ret = AVERROR(EINVAL);
426 CHECK_CHANNELS_CONSISTENCY(src);
428 dst->extended_data = av_malloc_array(sizeof(*dst->extended_data), ch);
429 if (!dst->extended_data) {
430 ret = AVERROR(ENOMEM);
433 memcpy(dst->extended_data, src->extended_data, sizeof(*src->extended_data) * ch);
435 dst->extended_data = dst->data;
437 memcpy(dst->data, src->data, sizeof(src->data));
438 memcpy(dst->linesize, src->linesize, sizeof(src->linesize));
447 AVFrame *av_frame_clone(const AVFrame *src)
449 AVFrame *ret = av_frame_alloc();
454 if (av_frame_ref(ret, src) < 0)
460 void av_frame_unref(AVFrame *frame)
467 wipe_side_data(frame);
469 for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++)
470 av_buffer_unref(&frame->buf[i]);
471 for (i = 0; i < frame->nb_extended_buf; i++)
472 av_buffer_unref(&frame->extended_buf[i]);
473 av_freep(&frame->extended_buf);
474 av_dict_free(&frame->metadata);
476 av_buffer_unref(&frame->hw_frames_ctx);
478 av_buffer_unref(&frame->opaque_ref);
479 av_buffer_unref(&frame->private_ref);
481 get_frame_defaults(frame);
484 void av_frame_move_ref(AVFrame *dst, AVFrame *src)
486 av_assert1(dst->width == 0 && dst->height == 0);
487 av_assert1(dst->channels == 0);
490 if (src->extended_data == src->data)
491 dst->extended_data = dst->data;
492 memset(src, 0, sizeof(*src));
493 get_frame_defaults(src);
496 int av_frame_is_writable(AVFrame *frame)
500 /* assume non-refcounted frames are not writable */
504 for (i = 0; i < FF_ARRAY_ELEMS(frame->buf); i++)
506 ret &= !!av_buffer_is_writable(frame->buf[i]);
507 for (i = 0; i < frame->nb_extended_buf; i++)
508 ret &= !!av_buffer_is_writable(frame->extended_buf[i]);
513 int av_frame_make_writable(AVFrame *frame)
519 return AVERROR(EINVAL);
521 if (av_frame_is_writable(frame))
524 memset(&tmp, 0, sizeof(tmp));
525 tmp.format = frame->format;
526 tmp.width = frame->width;
527 tmp.height = frame->height;
528 tmp.channels = frame->channels;
529 tmp.channel_layout = frame->channel_layout;
530 tmp.nb_samples = frame->nb_samples;
532 if (frame->hw_frames_ctx)
533 ret = av_hwframe_get_buffer(frame->hw_frames_ctx, &tmp, 0);
535 ret = av_frame_get_buffer(&tmp, 0);
539 ret = av_frame_copy(&tmp, frame);
541 av_frame_unref(&tmp);
545 ret = av_frame_copy_props(&tmp, frame);
547 av_frame_unref(&tmp);
551 av_frame_unref(frame);
554 if (tmp.data == tmp.extended_data)
555 frame->extended_data = frame->data;
560 int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
562 return frame_copy_props(dst, src, 1);
565 AVBufferRef *av_frame_get_plane_buffer(AVFrame *frame, int plane)
570 if (frame->nb_samples) {
571 int channels = frame->channels;
574 CHECK_CHANNELS_CONSISTENCY(frame);
575 planes = av_sample_fmt_is_planar(frame->format) ? channels : 1;
579 if (plane < 0 || plane >= planes || !frame->extended_data[plane])
581 data = frame->extended_data[plane];
583 for (i = 0; i < FF_ARRAY_ELEMS(frame->buf) && frame->buf[i]; i++) {
584 AVBufferRef *buf = frame->buf[i];
585 if (data >= buf->data && data < buf->data + buf->size)
588 for (i = 0; i < frame->nb_extended_buf; i++) {
589 AVBufferRef *buf = frame->extended_buf[i];
590 if (data >= buf->data && data < buf->data + buf->size)
596 AVFrameSideData *av_frame_new_side_data_from_buf(AVFrame *frame,
597 enum AVFrameSideDataType type,
600 AVFrameSideData *ret, **tmp;
605 if (frame->nb_side_data > INT_MAX / sizeof(*frame->side_data) - 1)
608 tmp = av_realloc(frame->side_data,
609 (frame->nb_side_data + 1) * sizeof(*frame->side_data));
612 frame->side_data = tmp;
614 ret = av_mallocz(sizeof(*ret));
619 ret->data = ret->buf->data;
620 ret->size = buf->size;
623 frame->side_data[frame->nb_side_data++] = ret;
628 AVFrameSideData *av_frame_new_side_data(AVFrame *frame,
629 enum AVFrameSideDataType type,
632 AVFrameSideData *ret;
633 AVBufferRef *buf = av_buffer_alloc(size);
634 ret = av_frame_new_side_data_from_buf(frame, type, buf);
636 av_buffer_unref(&buf);
640 AVFrameSideData *av_frame_get_side_data(const AVFrame *frame,
641 enum AVFrameSideDataType type)
645 for (i = 0; i < frame->nb_side_data; i++) {
646 if (frame->side_data[i]->type == type)
647 return frame->side_data[i];
652 static int frame_copy_video(AVFrame *dst, const AVFrame *src)
654 const uint8_t *src_data[4];
657 if (dst->width < src->width ||
658 dst->height < src->height)
659 return AVERROR(EINVAL);
661 if (src->hw_frames_ctx || dst->hw_frames_ctx)
662 return av_hwframe_transfer_data(dst, src, 0);
664 planes = av_pix_fmt_count_planes(dst->format);
665 for (i = 0; i < planes; i++)
666 if (!dst->data[i] || !src->data[i])
667 return AVERROR(EINVAL);
669 memcpy(src_data, src->data, sizeof(src_data));
670 av_image_copy(dst->data, dst->linesize,
671 src_data, src->linesize,
672 dst->format, src->width, src->height);
677 static int frame_copy_audio(AVFrame *dst, const AVFrame *src)
679 int planar = av_sample_fmt_is_planar(dst->format);
680 int channels = dst->channels;
681 int planes = planar ? channels : 1;
684 if (dst->nb_samples != src->nb_samples ||
685 dst->channels != src->channels ||
686 dst->channel_layout != src->channel_layout)
687 return AVERROR(EINVAL);
689 CHECK_CHANNELS_CONSISTENCY(src);
691 for (i = 0; i < planes; i++)
692 if (!dst->extended_data[i] || !src->extended_data[i])
693 return AVERROR(EINVAL);
695 av_samples_copy(dst->extended_data, src->extended_data, 0, 0,
696 dst->nb_samples, channels, dst->format);
701 int av_frame_copy(AVFrame *dst, const AVFrame *src)
703 if (dst->format != src->format || dst->format < 0)
704 return AVERROR(EINVAL);
706 if (dst->width > 0 && dst->height > 0)
707 return frame_copy_video(dst, src);
708 else if (dst->nb_samples > 0 && dst->channels > 0)
709 return frame_copy_audio(dst, src);
711 return AVERROR(EINVAL);
714 void av_frame_remove_side_data(AVFrame *frame, enum AVFrameSideDataType type)
718 for (i = frame->nb_side_data - 1; i >= 0; i--) {
719 AVFrameSideData *sd = frame->side_data[i];
720 if (sd->type == type) {
721 free_side_data(&frame->side_data[i]);
722 frame->side_data[i] = frame->side_data[frame->nb_side_data - 1];
723 frame->nb_side_data--;
728 const char *av_frame_side_data_name(enum AVFrameSideDataType type)
731 case AV_FRAME_DATA_PANSCAN: return "AVPanScan";
732 case AV_FRAME_DATA_A53_CC: return "ATSC A53 Part 4 Closed Captions";
733 case AV_FRAME_DATA_STEREO3D: return "Stereo 3D";
734 case AV_FRAME_DATA_MATRIXENCODING: return "AVMatrixEncoding";
735 case AV_FRAME_DATA_DOWNMIX_INFO: return "Metadata relevant to a downmix procedure";
736 case AV_FRAME_DATA_REPLAYGAIN: return "AVReplayGain";
737 case AV_FRAME_DATA_DISPLAYMATRIX: return "3x3 displaymatrix";
738 case AV_FRAME_DATA_AFD: return "Active format description";
739 case AV_FRAME_DATA_MOTION_VECTORS: return "Motion vectors";
740 case AV_FRAME_DATA_SKIP_SAMPLES: return "Skip samples";
741 case AV_FRAME_DATA_AUDIO_SERVICE_TYPE: return "Audio service type";
742 case AV_FRAME_DATA_MASTERING_DISPLAY_METADATA: return "Mastering display metadata";
743 case AV_FRAME_DATA_CONTENT_LIGHT_LEVEL: return "Content light level metadata";
744 case AV_FRAME_DATA_GOP_TIMECODE: return "GOP timecode";
745 case AV_FRAME_DATA_S12M_TIMECODE: return "SMPTE 12-1 timecode";
746 case AV_FRAME_DATA_SPHERICAL: return "Spherical Mapping";
747 case AV_FRAME_DATA_ICC_PROFILE: return "ICC profile";
748 case AV_FRAME_DATA_DYNAMIC_HDR_PLUS: return "HDR Dynamic Metadata SMPTE2094-40 (HDR10+)";
749 case AV_FRAME_DATA_REGIONS_OF_INTEREST: return "Regions Of Interest";
750 case AV_FRAME_DATA_VIDEO_ENC_PARAMS: return "Video encoding parameters";
751 case AV_FRAME_DATA_SEI_UNREGISTERED: return "H.26[45] User Data Unregistered SEI message";
752 case AV_FRAME_DATA_FILM_GRAIN_PARAMS: return "Film grain parameters";
753 case AV_FRAME_DATA_DETECTION_BBOXES: return "Bounding boxes for object detection and classification";
758 static int calc_cropping_offsets(size_t offsets[4], const AVFrame *frame,
759 const AVPixFmtDescriptor *desc)
763 for (i = 0; frame->data[i]; i++) {
764 const AVComponentDescriptor *comp = NULL;
765 int shift_x = (i == 1 || i == 2) ? desc->log2_chroma_w : 0;
766 int shift_y = (i == 1 || i == 2) ? desc->log2_chroma_h : 0;
768 if (desc->flags & (AV_PIX_FMT_FLAG_PAL | FF_PSEUDOPAL) && i == 1) {
773 /* find any component descriptor for this plane */
774 for (j = 0; j < desc->nb_components; j++) {
775 if (desc->comp[j].plane == i) {
776 comp = &desc->comp[j];
783 offsets[i] = (frame->crop_top >> shift_y) * frame->linesize[i] +
784 (frame->crop_left >> shift_x) * comp->step;
790 int av_frame_apply_cropping(AVFrame *frame, int flags)
792 const AVPixFmtDescriptor *desc;
796 if (!(frame->width > 0 && frame->height > 0))
797 return AVERROR(EINVAL);
799 if (frame->crop_left >= INT_MAX - frame->crop_right ||
800 frame->crop_top >= INT_MAX - frame->crop_bottom ||
801 (frame->crop_left + frame->crop_right) >= frame->width ||
802 (frame->crop_top + frame->crop_bottom) >= frame->height)
803 return AVERROR(ERANGE);
805 desc = av_pix_fmt_desc_get(frame->format);
809 /* Apply just the right/bottom cropping for hwaccel formats. Bitstream
810 * formats cannot be easily handled here either (and corresponding decoders
811 * should not export any cropping anyway), so do the same for those as well.
813 if (desc->flags & (AV_PIX_FMT_FLAG_BITSTREAM | AV_PIX_FMT_FLAG_HWACCEL)) {
814 frame->width -= frame->crop_right;
815 frame->height -= frame->crop_bottom;
816 frame->crop_right = 0;
817 frame->crop_bottom = 0;
821 /* calculate the offsets for each plane */
822 calc_cropping_offsets(offsets, frame, desc);
824 /* adjust the offsets to avoid breaking alignment */
825 if (!(flags & AV_FRAME_CROP_UNALIGNED)) {
826 int log2_crop_align = frame->crop_left ? ff_ctz(frame->crop_left) : INT_MAX;
827 int min_log2_align = INT_MAX;
829 for (i = 0; frame->data[i]; i++) {
830 int log2_align = offsets[i] ? ff_ctz(offsets[i]) : INT_MAX;
831 min_log2_align = FFMIN(log2_align, min_log2_align);
834 /* we assume, and it should always be true, that the data alignment is
835 * related to the cropping alignment by a constant power-of-2 factor */
836 if (log2_crop_align < min_log2_align)
839 if (min_log2_align < 5) {
840 frame->crop_left &= ~((1 << (5 + log2_crop_align - min_log2_align)) - 1);
841 calc_cropping_offsets(offsets, frame, desc);
845 for (i = 0; frame->data[i]; i++)
846 frame->data[i] += offsets[i];
848 frame->width -= (frame->crop_left + frame->crop_right);
849 frame->height -= (frame->crop_top + frame->crop_bottom);
850 frame->crop_left = 0;
851 frame->crop_right = 0;
853 frame->crop_bottom = 0;