2 * AVCodecContext functions for libavcodec
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * AVCodecContext functions for libavcodec
27 #include "libavutil/avassert.h"
28 #include "libavutil/avstring.h"
29 #include "libavutil/bprint.h"
30 #include "libavutil/imgutils.h"
31 #include "libavutil/mem.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/thread.h"
37 #include "frame_thread_encoder.h"
41 #include "libavutil/ffversion.h"
42 const char av_codec_ffversion[] = "FFmpeg version " FFMPEG_VERSION;
44 unsigned avcodec_version(void)
46 av_assert0(AV_CODEC_ID_PCM_S8_PLANAR==65563);
47 av_assert0(AV_CODEC_ID_ADPCM_G722==69660);
48 av_assert0(AV_CODEC_ID_SRT==94216);
49 av_assert0(LIBAVCODEC_VERSION_MICRO >= 100);
51 return LIBAVCODEC_VERSION_INT;
54 const char *avcodec_configuration(void)
56 return FFMPEG_CONFIGURATION;
59 const char *avcodec_license(void)
61 #define LICENSE_PREFIX "libavcodec license: "
62 return &LICENSE_PREFIX FFMPEG_LICENSE[sizeof(LICENSE_PREFIX) - 1];
65 int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size)
69 for (i = 0; i < count; i++) {
70 int r = func(c, (char *)arg + i * size);
78 int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2, int jobnr, int threadnr), void *arg, int *ret, int count)
82 for (i = 0; i < count; i++) {
83 int r = func(c, arg, i, 0);
91 static AVMutex codec_mutex = AV_MUTEX_INITIALIZER;
93 static void lock_avcodec(const AVCodec *codec)
95 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
96 ff_mutex_lock(&codec_mutex);
99 static void unlock_avcodec(const AVCodec *codec)
101 if (!(codec->caps_internal & FF_CODEC_CAP_INIT_THREADSAFE) && codec->init)
102 ff_mutex_unlock(&codec_mutex);
105 static int64_t get_bit_rate(AVCodecContext *ctx)
110 switch (ctx->codec_type) {
111 case AVMEDIA_TYPE_VIDEO:
112 case AVMEDIA_TYPE_DATA:
113 case AVMEDIA_TYPE_SUBTITLE:
114 case AVMEDIA_TYPE_ATTACHMENT:
115 bit_rate = ctx->bit_rate;
117 case AVMEDIA_TYPE_AUDIO:
118 bits_per_sample = av_get_bits_per_sample(ctx->codec_id);
119 if (bits_per_sample) {
120 bit_rate = ctx->sample_rate * (int64_t)ctx->channels;
121 if (bit_rate > INT64_MAX / bits_per_sample) {
124 bit_rate *= bits_per_sample;
126 bit_rate = ctx->bit_rate;
135 int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
138 int codec_init_ok = 0;
139 AVDictionary *tmp = NULL;
140 AVCodecInternal *avci;
142 if (avcodec_is_open(avctx))
145 if (!codec && !avctx->codec) {
146 av_log(avctx, AV_LOG_ERROR, "No codec provided to avcodec_open2()\n");
147 return AVERROR(EINVAL);
149 if (codec && avctx->codec && codec != avctx->codec) {
150 av_log(avctx, AV_LOG_ERROR, "This AVCodecContext was allocated for %s, "
151 "but %s passed to avcodec_open2()\n", avctx->codec->name, codec->name);
152 return AVERROR(EINVAL);
155 codec = avctx->codec;
157 if ((avctx->codec_type == AVMEDIA_TYPE_UNKNOWN || avctx->codec_type == codec->type) &&
158 avctx->codec_id == AV_CODEC_ID_NONE) {
159 avctx->codec_type = codec->type;
160 avctx->codec_id = codec->id;
162 if (avctx->codec_id != codec->id || (avctx->codec_type != codec->type &&
163 avctx->codec_type != AVMEDIA_TYPE_ATTACHMENT)) {
164 av_log(avctx, AV_LOG_ERROR, "Codec type or id mismatches\n");
165 return AVERROR(EINVAL);
167 avctx->codec = codec;
169 if (avctx->extradata_size < 0 || avctx->extradata_size >= FF_MAX_EXTRADATA_SIZE)
170 return AVERROR(EINVAL);
173 av_dict_copy(&tmp, *options, 0);
177 avci = av_mallocz(sizeof(*avci));
179 ret = AVERROR(ENOMEM);
182 avctx->internal = avci;
184 #if FF_API_OLD_ENCDEC
185 avci->to_free = av_frame_alloc();
186 avci->compat_decode_frame = av_frame_alloc();
187 avci->compat_encode_packet = av_packet_alloc();
188 if (!avci->to_free || !avci->compat_decode_frame || !avci->compat_encode_packet) {
189 ret = AVERROR(ENOMEM);
193 avci->buffer_frame = av_frame_alloc();
194 avci->buffer_pkt = av_packet_alloc();
195 avci->es.in_frame = av_frame_alloc();
196 avci->ds.in_pkt = av_packet_alloc();
197 avci->last_pkt_props = av_packet_alloc();
198 avci->pkt_props = av_fifo_alloc(sizeof(*avci->last_pkt_props));
199 if (!avci->buffer_frame || !avci->buffer_pkt ||
200 !avci->es.in_frame || !avci->ds.in_pkt ||
201 !avci->last_pkt_props || !avci->pkt_props) {
202 ret = AVERROR(ENOMEM);
206 avci->skip_samples_multiplier = 1;
208 if (codec->priv_data_size > 0) {
209 if (!avctx->priv_data) {
210 avctx->priv_data = av_mallocz(codec->priv_data_size);
211 if (!avctx->priv_data) {
212 ret = AVERROR(ENOMEM);
215 if (codec->priv_class) {
216 *(const AVClass **)avctx->priv_data = codec->priv_class;
217 av_opt_set_defaults(avctx->priv_data);
220 if (codec->priv_class && (ret = av_opt_set_dict(avctx->priv_data, &tmp)) < 0)
223 avctx->priv_data = NULL;
225 if ((ret = av_opt_set_dict(avctx, &tmp)) < 0)
228 if (avctx->codec_whitelist && av_match_list(codec->name, avctx->codec_whitelist, ',') <= 0) {
229 av_log(avctx, AV_LOG_ERROR, "Codec (%s) not on whitelist \'%s\'\n", codec->name, avctx->codec_whitelist);
230 ret = AVERROR(EINVAL);
234 // only call ff_set_dimensions() for non H.264/VP6F/DXV codecs so as not to overwrite previously setup dimensions
235 if (!(avctx->coded_width && avctx->coded_height && avctx->width && avctx->height &&
236 (avctx->codec_id == AV_CODEC_ID_H264 || avctx->codec_id == AV_CODEC_ID_VP6F || avctx->codec_id == AV_CODEC_ID_DXV))) {
237 if (avctx->coded_width && avctx->coded_height)
238 ret = ff_set_dimensions(avctx, avctx->coded_width, avctx->coded_height);
239 else if (avctx->width && avctx->height)
240 ret = ff_set_dimensions(avctx, avctx->width, avctx->height);
245 if ((avctx->coded_width || avctx->coded_height || avctx->width || avctx->height)
246 && ( av_image_check_size2(avctx->coded_width, avctx->coded_height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0
247 || av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx) < 0)) {
248 av_log(avctx, AV_LOG_WARNING, "Ignoring invalid width/height values\n");
249 ff_set_dimensions(avctx, 0, 0);
252 if (avctx->width > 0 && avctx->height > 0) {
253 if (av_image_check_sar(avctx->width, avctx->height,
254 avctx->sample_aspect_ratio) < 0) {
255 av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n",
256 avctx->sample_aspect_ratio.num,
257 avctx->sample_aspect_ratio.den);
258 avctx->sample_aspect_ratio = (AVRational){ 0, 1 };
262 if (avctx->channels > FF_SANE_NB_CHANNELS || avctx->channels < 0) {
263 av_log(avctx, AV_LOG_ERROR, "Too many or invalid channels: %d\n", avctx->channels);
264 ret = AVERROR(EINVAL);
268 if (avctx->sample_rate < 0) {
269 av_log(avctx, AV_LOG_ERROR, "Invalid sample rate: %d\n", avctx->sample_rate);
270 ret = AVERROR(EINVAL);
273 if (avctx->block_align < 0) {
274 av_log(avctx, AV_LOG_ERROR, "Invalid block align: %d\n", avctx->block_align);
275 ret = AVERROR(EINVAL);
279 avctx->frame_number = 0;
280 avctx->codec_descriptor = avcodec_descriptor_get(avctx->codec_id);
282 if ((avctx->codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL) &&
283 avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
284 const char *codec_string = av_codec_is_encoder(codec) ? "encoder" : "decoder";
285 const AVCodec *codec2;
286 av_log(avctx, AV_LOG_ERROR,
287 "The %s '%s' is experimental but experimental codecs are not enabled, "
288 "add '-strict %d' if you want to use it.\n",
289 codec_string, codec->name, FF_COMPLIANCE_EXPERIMENTAL);
290 codec2 = av_codec_is_encoder(codec) ? avcodec_find_encoder(codec->id) : avcodec_find_decoder(codec->id);
291 if (!(codec2->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
292 av_log(avctx, AV_LOG_ERROR, "Alternatively use the non experimental %s '%s'.\n",
293 codec_string, codec2->name);
294 ret = AVERROR_EXPERIMENTAL;
298 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO &&
299 (!avctx->time_base.num || !avctx->time_base.den)) {
300 avctx->time_base.num = 1;
301 avctx->time_base.den = avctx->sample_rate;
304 if (av_codec_is_encoder(avctx->codec))
305 ret = ff_encode_preinit(avctx);
307 ret = ff_decode_preinit(avctx);
312 av_log(avctx, AV_LOG_WARNING, "Warning: not compiled with thread support, using thread emulation\n");
314 if (CONFIG_FRAME_THREAD_ENCODER && av_codec_is_encoder(avctx->codec)) {
315 unlock_avcodec(codec); //we will instantiate a few encoders thus kick the counter to prevent false detection of a problem
316 ret = ff_frame_thread_encoder_init(avctx, options ? *options : NULL);
323 && !(avci->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME))) {
324 ret = ff_thread_init(avctx);
329 if (!HAVE_THREADS && !(codec->caps_internal & FF_CODEC_CAP_AUTO_THREADS))
330 avctx->thread_count = 1;
332 if ( avctx->codec->init && (!(avctx->active_thread_type&FF_THREAD_FRAME)
333 || avci->frame_thread_encoder)) {
334 ret = avctx->codec->init(avctx);
344 if (av_codec_is_decoder(avctx->codec)) {
345 if (!avctx->bit_rate)
346 avctx->bit_rate = get_bit_rate(avctx);
347 /* validate channel layout from the decoder */
348 if (avctx->channel_layout) {
349 int channels = av_get_channel_layout_nb_channels(avctx->channel_layout);
350 if (!avctx->channels)
351 avctx->channels = channels;
352 else if (channels != avctx->channels) {
354 av_get_channel_layout_string(buf, sizeof(buf), -1, avctx->channel_layout);
355 av_log(avctx, AV_LOG_WARNING,
356 "Channel layout '%s' with %d channels does not match specified number of channels %d: "
357 "ignoring specified channel layout\n",
358 buf, channels, avctx->channels);
359 avctx->channel_layout = 0;
362 if (avctx->channels && avctx->channels < 0 ||
363 avctx->channels > FF_SANE_NB_CHANNELS) {
364 ret = AVERROR(EINVAL);
367 if (avctx->bits_per_coded_sample < 0) {
368 ret = AVERROR(EINVAL);
372 #if FF_API_AVCTX_TIMEBASE
373 if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
374 avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
377 if (codec->priv_data_size > 0 && avctx->priv_data && codec->priv_class) {
378 av_assert0(*(const AVClass **)avctx->priv_data == codec->priv_class);
382 unlock_avcodec(codec);
384 av_dict_free(options);
390 if (avctx->codec && avctx->codec->close &&
391 (codec_init_ok > 0 || (codec_init_ok < 0 &&
392 avctx->codec->caps_internal & FF_CODEC_CAP_INIT_CLEANUP)))
393 avctx->codec->close(avctx);
395 if (HAVE_THREADS && avci->thread_ctx)
396 ff_thread_free(avctx);
398 if (codec->priv_class && avctx->priv_data)
399 av_opt_free(avctx->priv_data);
402 if (av_codec_is_encoder(avctx->codec)) {
403 #if FF_API_CODED_FRAME
404 FF_DISABLE_DEPRECATION_WARNINGS
405 av_frame_free(&avctx->coded_frame);
406 FF_ENABLE_DEPRECATION_WARNINGS
408 av_freep(&avctx->extradata);
409 avctx->extradata_size = 0;
413 av_freep(&avctx->priv_data);
414 if (av_codec_is_decoder(avctx->codec))
415 av_freep(&avctx->subtitle_header);
417 #if FF_API_OLD_ENCDEC
418 av_frame_free(&avci->to_free);
419 av_frame_free(&avci->compat_decode_frame);
420 av_packet_free(&avci->compat_encode_packet);
422 av_frame_free(&avci->buffer_frame);
423 av_packet_free(&avci->buffer_pkt);
424 av_packet_free(&avci->last_pkt_props);
425 av_fifo_freep(&avci->pkt_props);
427 av_packet_free(&avci->ds.in_pkt);
428 av_frame_free(&avci->es.in_frame);
429 av_bsf_free(&avci->bsf);
431 av_buffer_unref(&avci->pool);
433 avctx->internal = NULL;
438 void avcodec_flush_buffers(AVCodecContext *avctx)
440 AVCodecInternal *avci = avctx->internal;
442 if (av_codec_is_encoder(avctx->codec)) {
443 int caps = avctx->codec->capabilities;
445 if (!(caps & AV_CODEC_CAP_ENCODER_FLUSH)) {
446 // Only encoders that explicitly declare support for it can be
447 // flushed. Otherwise, this is a no-op.
448 av_log(avctx, AV_LOG_WARNING, "Ignoring attempt to flush encoder "
449 "that doesn't support it\n");
453 // We haven't implemented flushing for frame-threaded encoders.
454 av_assert0(!(caps & AV_CODEC_CAP_FRAME_THREADS));
458 avci->draining_done = 0;
459 avci->nb_draining_errors = 0;
460 av_frame_unref(avci->buffer_frame);
461 #if FF_API_OLD_ENCDEC
462 av_frame_unref(avci->compat_decode_frame);
463 av_packet_unref(avci->compat_encode_packet);
465 av_packet_unref(avci->buffer_pkt);
467 av_packet_unref(avci->last_pkt_props);
468 while (av_fifo_size(avci->pkt_props) >= sizeof(*avci->last_pkt_props)) {
469 av_fifo_generic_read(avci->pkt_props,
470 avci->last_pkt_props, sizeof(*avci->last_pkt_props),
472 av_packet_unref(avci->last_pkt_props);
474 av_fifo_reset(avci->pkt_props);
476 av_frame_unref(avci->es.in_frame);
477 av_packet_unref(avci->ds.in_pkt);
479 if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
480 ff_thread_flush(avctx);
481 else if (avctx->codec->flush)
482 avctx->codec->flush(avctx);
484 avctx->pts_correction_last_pts =
485 avctx->pts_correction_last_dts = INT64_MIN;
487 if (av_codec_is_decoder(avctx->codec))
488 av_bsf_flush(avci->bsf);
490 #if FF_API_OLD_ENCDEC
491 FF_DISABLE_DEPRECATION_WARNINGS
492 if (!avctx->refcounted_frames)
493 av_frame_unref(avci->to_free);
494 FF_ENABLE_DEPRECATION_WARNINGS
498 void avsubtitle_free(AVSubtitle *sub)
502 for (i = 0; i < sub->num_rects; i++) {
503 av_freep(&sub->rects[i]->data[0]);
504 av_freep(&sub->rects[i]->data[1]);
505 av_freep(&sub->rects[i]->data[2]);
506 av_freep(&sub->rects[i]->data[3]);
507 av_freep(&sub->rects[i]->text);
508 av_freep(&sub->rects[i]->ass);
509 av_freep(&sub->rects[i]);
512 av_freep(&sub->rects);
514 memset(sub, 0, sizeof(*sub));
517 av_cold int avcodec_close(AVCodecContext *avctx)
524 if (avcodec_is_open(avctx)) {
525 AVCodecInternal *avci = avctx->internal;
527 if (CONFIG_FRAME_THREAD_ENCODER &&
528 avci->frame_thread_encoder && avctx->thread_count > 1) {
529 ff_frame_thread_encoder_free(avctx);
531 if (HAVE_THREADS && avci->thread_ctx)
532 ff_thread_free(avctx);
533 if (avctx->codec && avctx->codec->close)
534 avctx->codec->close(avctx);
535 avci->byte_buffer_size = 0;
536 av_freep(&avci->byte_buffer);
537 #if FF_API_OLD_ENCDEC
538 av_frame_free(&avci->to_free);
539 av_frame_free(&avci->compat_decode_frame);
540 av_packet_free(&avci->compat_encode_packet);
542 av_frame_free(&avci->buffer_frame);
543 av_packet_free(&avci->buffer_pkt);
544 av_packet_unref(avci->last_pkt_props);
545 while (av_fifo_size(avci->pkt_props) >= sizeof(*avci->last_pkt_props)) {
546 av_fifo_generic_read(avci->pkt_props, avci->last_pkt_props,
547 sizeof(*avci->last_pkt_props), NULL);
548 av_packet_unref(avci->last_pkt_props);
550 av_packet_free(&avci->last_pkt_props);
551 av_fifo_freep(&avci->pkt_props);
553 av_packet_free(&avci->ds.in_pkt);
554 av_frame_free(&avci->es.in_frame);
556 av_buffer_unref(&avci->pool);
558 if (avctx->hwaccel && avctx->hwaccel->uninit)
559 avctx->hwaccel->uninit(avctx);
560 av_freep(&avci->hwaccel_priv_data);
562 av_bsf_free(&avci->bsf);
564 av_freep(&avctx->internal);
567 for (i = 0; i < avctx->nb_coded_side_data; i++)
568 av_freep(&avctx->coded_side_data[i].data);
569 av_freep(&avctx->coded_side_data);
570 avctx->nb_coded_side_data = 0;
572 av_buffer_unref(&avctx->hw_frames_ctx);
573 av_buffer_unref(&avctx->hw_device_ctx);
575 if (avctx->priv_data && avctx->codec && avctx->codec->priv_class)
576 av_opt_free(avctx->priv_data);
578 av_freep(&avctx->priv_data);
579 if (av_codec_is_encoder(avctx->codec)) {
580 av_freep(&avctx->extradata);
581 #if FF_API_CODED_FRAME
582 FF_DISABLE_DEPRECATION_WARNINGS
583 av_frame_free(&avctx->coded_frame);
584 FF_ENABLE_DEPRECATION_WARNINGS
586 } else if (av_codec_is_decoder(avctx->codec))
587 av_freep(&avctx->subtitle_header);
590 avctx->active_thread_type = 0;
595 static const char *unknown_if_null(const char *str)
597 return str ? str : "unknown";
600 void avcodec_string(char *buf, int buf_size, AVCodecContext *enc, int encode)
602 const char *codec_type;
603 const char *codec_name;
604 const char *profile = NULL;
608 AVRational display_aspect_ratio;
609 const char *separator = enc->dump_separator ? (const char *)enc->dump_separator : ", ";
612 if (!buf || buf_size <= 0)
614 av_bprint_init_for_buffer(&bprint, buf, buf_size);
615 codec_type = av_get_media_type_string(enc->codec_type);
616 codec_name = avcodec_get_name(enc->codec_id);
617 profile = avcodec_profile_name(enc->codec_id, enc->profile);
619 av_bprintf(&bprint, "%s: %s", codec_type ? codec_type : "unknown",
621 buf[0] ^= 'a' ^ 'A'; /* first letter in uppercase */
623 if (enc->codec && strcmp(enc->codec->name, codec_name))
624 av_bprintf(&bprint, " (%s)", enc->codec->name);
627 av_bprintf(&bprint, " (%s)", profile);
628 if ( enc->codec_type == AVMEDIA_TYPE_VIDEO
629 && av_log_get_level() >= AV_LOG_VERBOSE
631 av_bprintf(&bprint, ", %d reference frame%s",
632 enc->refs, enc->refs > 1 ? "s" : "");
635 av_bprintf(&bprint, " (%s / 0x%04X)",
636 av_fourcc2str(enc->codec_tag), enc->codec_tag);
638 switch (enc->codec_type) {
639 case AVMEDIA_TYPE_VIDEO:
643 av_bprintf(&bprint, "%s%s", separator,
644 enc->pix_fmt == AV_PIX_FMT_NONE ? "none" :
645 unknown_if_null(av_get_pix_fmt_name(enc->pix_fmt)));
647 av_bprint_chars(&bprint, '(', 1);
650 /* The following check ensures that '(' has been written
651 * and therefore allows us to erase it if it turns out
652 * to be unnecessary. */
653 if (!av_bprint_is_complete(&bprint))
656 if (enc->bits_per_raw_sample && enc->pix_fmt != AV_PIX_FMT_NONE &&
657 enc->bits_per_raw_sample < av_pix_fmt_desc_get(enc->pix_fmt)->comp[0].depth)
658 av_bprintf(&bprint, "%d bpc, ", enc->bits_per_raw_sample);
659 if (enc->color_range != AVCOL_RANGE_UNSPECIFIED &&
660 (str = av_color_range_name(enc->color_range)))
661 av_bprintf(&bprint, "%s, ", str);
663 if (enc->colorspace != AVCOL_SPC_UNSPECIFIED ||
664 enc->color_primaries != AVCOL_PRI_UNSPECIFIED ||
665 enc->color_trc != AVCOL_TRC_UNSPECIFIED) {
666 const char *col = unknown_if_null(av_color_space_name(enc->colorspace));
667 const char *pri = unknown_if_null(av_color_primaries_name(enc->color_primaries));
668 const char *trc = unknown_if_null(av_color_transfer_name(enc->color_trc));
669 if (strcmp(col, pri) || strcmp(col, trc)) {
671 av_bprintf(&bprint, "%s/%s/%s, ", col, pri, trc);
673 av_bprintf(&bprint, "%s, ", col);
676 if (enc->field_order != AV_FIELD_UNKNOWN) {
677 const char *field_order = "progressive";
678 if (enc->field_order == AV_FIELD_TT)
679 field_order = "top first";
680 else if (enc->field_order == AV_FIELD_BB)
681 field_order = "bottom first";
682 else if (enc->field_order == AV_FIELD_TB)
683 field_order = "top coded first (swapped)";
684 else if (enc->field_order == AV_FIELD_BT)
685 field_order = "bottom coded first (swapped)";
687 av_bprintf(&bprint, "%s, ", field_order);
690 if (av_log_get_level() >= AV_LOG_VERBOSE &&
691 enc->chroma_sample_location != AVCHROMA_LOC_UNSPECIFIED &&
692 (str = av_chroma_location_name(enc->chroma_sample_location)))
693 av_bprintf(&bprint, "%s, ", str);
695 if (len == bprint.len) {
696 bprint.str[len - 1] = '\0';
699 if (bprint.len - 2 < bprint.size) {
700 /* Erase the last ", " */
702 bprint.str[bprint.len] = '\0';
704 av_bprint_chars(&bprint, ')', 1);
709 av_bprintf(&bprint, "%s%dx%d", new_line ? separator : ", ",
710 enc->width, enc->height);
712 if (av_log_get_level() >= AV_LOG_VERBOSE &&
713 (enc->width != enc->coded_width ||
714 enc->height != enc->coded_height))
715 av_bprintf(&bprint, " (%dx%d)",
716 enc->coded_width, enc->coded_height);
718 if (enc->sample_aspect_ratio.num) {
719 av_reduce(&display_aspect_ratio.num, &display_aspect_ratio.den,
720 enc->width * (int64_t)enc->sample_aspect_ratio.num,
721 enc->height * (int64_t)enc->sample_aspect_ratio.den,
723 av_bprintf(&bprint, " [SAR %d:%d DAR %d:%d]",
724 enc->sample_aspect_ratio.num, enc->sample_aspect_ratio.den,
725 display_aspect_ratio.num, display_aspect_ratio.den);
727 if (av_log_get_level() >= AV_LOG_DEBUG) {
728 int g = av_gcd(enc->time_base.num, enc->time_base.den);
729 av_bprintf(&bprint, ", %d/%d",
730 enc->time_base.num / g, enc->time_base.den / g);
734 av_bprintf(&bprint, ", q=%d-%d", enc->qmin, enc->qmax);
736 if (enc->properties & FF_CODEC_PROPERTY_CLOSED_CAPTIONS)
737 av_bprintf(&bprint, ", Closed Captions");
738 if (enc->properties & FF_CODEC_PROPERTY_LOSSLESS)
739 av_bprintf(&bprint, ", lossless");
742 case AVMEDIA_TYPE_AUDIO:
743 av_bprintf(&bprint, "%s", separator);
745 if (enc->sample_rate) {
746 av_bprintf(&bprint, "%d Hz, ", enc->sample_rate);
748 av_bprint_channel_layout(&bprint, enc->channels, enc->channel_layout);
749 if (enc->sample_fmt != AV_SAMPLE_FMT_NONE &&
750 (str = av_get_sample_fmt_name(enc->sample_fmt))) {
751 av_bprintf(&bprint, ", %s", str);
753 if ( enc->bits_per_raw_sample > 0
754 && enc->bits_per_raw_sample != av_get_bytes_per_sample(enc->sample_fmt) * 8)
755 av_bprintf(&bprint, " (%d bit)", enc->bits_per_raw_sample);
756 if (av_log_get_level() >= AV_LOG_VERBOSE) {
757 if (enc->initial_padding)
758 av_bprintf(&bprint, ", delay %d", enc->initial_padding);
759 if (enc->trailing_padding)
760 av_bprintf(&bprint, ", padding %d", enc->trailing_padding);
763 case AVMEDIA_TYPE_DATA:
764 if (av_log_get_level() >= AV_LOG_DEBUG) {
765 int g = av_gcd(enc->time_base.num, enc->time_base.den);
767 av_bprintf(&bprint, ", %d/%d",
768 enc->time_base.num / g, enc->time_base.den / g);
771 case AVMEDIA_TYPE_SUBTITLE:
773 av_bprintf(&bprint, ", %dx%d", enc->width, enc->height);
779 if (enc->flags & AV_CODEC_FLAG_PASS1)
780 av_bprintf(&bprint, ", pass 1");
781 if (enc->flags & AV_CODEC_FLAG_PASS2)
782 av_bprintf(&bprint, ", pass 2");
784 bitrate = get_bit_rate(enc);
786 av_bprintf(&bprint, ", %"PRId64" kb/s", bitrate / 1000);
787 } else if (enc->rc_max_rate > 0) {
788 av_bprintf(&bprint, ", max. %"PRId64" kb/s", enc->rc_max_rate / 1000);
792 int avcodec_is_open(AVCodecContext *s)
794 return !!s->internal;