diff options
Diffstat (limited to 'media/ffvpx/libavcodec/encode.c')
| -rw-r--r-- | media/ffvpx/libavcodec/encode.c | 899 |
1 files changed, 899 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/encode.c b/media/ffvpx/libavcodec/encode.c new file mode 100644 index 0000000000..a436be2657 --- /dev/null +++ b/media/ffvpx/libavcodec/encode.c @@ -0,0 +1,899 @@ +/* + * generic encoding-related code + * + * 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 "libavutil/attributes.h" +#include "libavutil/avassert.h" +#include "libavutil/channel_layout.h" +#include "libavutil/emms.h" +#include "libavutil/frame.h" +#include "libavutil/imgutils.h" +#include "libavutil/internal.h" +#include "libavutil/pixdesc.h" +#include "libavutil/samplefmt.h" + +#include "avcodec.h" +#include "avcodec_internal.h" +#include "codec_desc.h" +#include "codec_internal.h" +#include "encode.h" +#include "frame_thread_encoder.h" +#include "internal.h" + +typedef struct EncodeContext { + AVCodecInternal avci; + + /** + * This is set to AV_PKT_FLAG_KEY for encoders that encode intra-only + * formats (i.e. whose codec descriptor has AV_CODEC_PROP_INTRA_ONLY set). + * This is used to set said flag generically for said encoders. + */ + int intra_only_flag; + + /** + * An audio frame with less than required samples has been submitted (and + * potentially padded with silence). Reject all subsequent frames. + */ + int last_audio_frame; +} EncodeContext; + +static EncodeContext *encode_ctx(AVCodecInternal *avci) +{ + return (EncodeContext*)avci; +} + +int ff_alloc_packet(AVCodecContext *avctx, AVPacket *avpkt, int64_t size) +{ + if (size < 0 || size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE) { + av_log(avctx, AV_LOG_ERROR, "Invalid minimum required packet size %"PRId64" (max allowed is %d)\n", + size, INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE); + return AVERROR(EINVAL); + } + + av_assert0(!avpkt->data); + + av_fast_padded_malloc(&avctx->internal->byte_buffer, + &avctx->internal->byte_buffer_size, size); + avpkt->data = avctx->internal->byte_buffer; + if (!avpkt->data) { + av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size); + return AVERROR(ENOMEM); + } + avpkt->size = size; + + return 0; +} + +int avcodec_default_get_encode_buffer(AVCodecContext *avctx, AVPacket *avpkt, int flags) +{ + int ret; + + if (avpkt->size < 0 || avpkt->size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE) + return AVERROR(EINVAL); + + if (avpkt->data || avpkt->buf) { + av_log(avctx, AV_LOG_ERROR, "avpkt->{data,buf} != NULL in avcodec_default_get_encode_buffer()\n"); + return AVERROR(EINVAL); + } + + ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE); + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %d\n", avpkt->size); + return ret; + } + avpkt->data = avpkt->buf->data; + + return 0; +} + +int ff_get_encode_buffer(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int flags) +{ + int ret; + + if (size < 0 || size > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE) + return AVERROR(EINVAL); + + av_assert0(!avpkt->data && !avpkt->buf); + + avpkt->size = size; + ret = avctx->get_encode_buffer(avctx, avpkt, flags); + if (ret < 0) + goto fail; + + if (!avpkt->data || !avpkt->buf) { + av_log(avctx, AV_LOG_ERROR, "No buffer returned by get_encode_buffer()\n"); + ret = AVERROR(EINVAL); + goto fail; + } + memset(avpkt->data + avpkt->size, 0, AV_INPUT_BUFFER_PADDING_SIZE); + + ret = 0; +fail: + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "get_encode_buffer() failed\n"); + av_packet_unref(avpkt); + } + + return ret; +} + +static int encode_make_refcounted(AVCodecContext *avctx, AVPacket *avpkt) +{ + uint8_t *data = avpkt->data; + int ret; + + if (avpkt->buf) + return 0; + + avpkt->data = NULL; + ret = ff_get_encode_buffer(avctx, avpkt, avpkt->size, 0); + if (ret < 0) + return ret; + memcpy(avpkt->data, data, avpkt->size); + + return 0; +} + +/** + * Pad last frame with silence. + */ +static int pad_last_frame(AVCodecContext *s, AVFrame *frame, const AVFrame *src, int out_samples) +{ + int ret; + + frame->format = src->format; + frame->nb_samples = out_samples; + ret = av_channel_layout_copy(&frame->ch_layout, &s->ch_layout); + if (ret < 0) + goto fail; + ret = av_frame_get_buffer(frame, 0); + if (ret < 0) + goto fail; + + ret = av_frame_copy_props(frame, src); + if (ret < 0) + goto fail; + + if ((ret = av_samples_copy(frame->extended_data, src->extended_data, 0, 0, + src->nb_samples, s->ch_layout.nb_channels, + s->sample_fmt)) < 0) + goto fail; + if ((ret = av_samples_set_silence(frame->extended_data, src->nb_samples, + frame->nb_samples - src->nb_samples, + s->ch_layout.nb_channels, s->sample_fmt)) < 0) + goto fail; + + return 0; + +fail: + av_frame_unref(frame); + encode_ctx(s->internal)->last_audio_frame = 0; + return ret; +} + +int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size, + const AVSubtitle *sub) +{ + int ret; + if (sub->start_display_time) { + av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n"); + return -1; + } + + ret = ffcodec(avctx->codec)->cb.encode_sub(avctx, buf, buf_size, sub); + avctx->frame_num++; +#if FF_API_AVCTX_FRAME_NUMBER +FF_DISABLE_DEPRECATION_WARNINGS + avctx->frame_number = avctx->frame_num; +FF_ENABLE_DEPRECATION_WARNINGS +#endif + return ret; +} + +int ff_encode_get_frame(AVCodecContext *avctx, AVFrame *frame) +{ + AVCodecInternal *avci = avctx->internal; + + if (avci->draining) + return AVERROR_EOF; + + if (!avci->buffer_frame->buf[0]) + return AVERROR(EAGAIN); + + av_frame_move_ref(frame, avci->buffer_frame); + +#if FF_API_FRAME_KEY +FF_DISABLE_DEPRECATION_WARNINGS + if (frame->key_frame) + frame->flags |= AV_FRAME_FLAG_KEY; +FF_ENABLE_DEPRECATION_WARNINGS +#endif +#if FF_API_INTERLACED_FRAME +FF_DISABLE_DEPRECATION_WARNINGS + if (frame->interlaced_frame) + frame->flags |= AV_FRAME_FLAG_INTERLACED; + if (frame->top_field_first) + frame->flags |= AV_FRAME_FLAG_TOP_FIELD_FIRST; +FF_ENABLE_DEPRECATION_WARNINGS +#endif + + return 0; +} + +int ff_encode_reordered_opaque(AVCodecContext *avctx, + AVPacket *pkt, const AVFrame *frame) +{ +#if FF_API_REORDERED_OPAQUE +FF_DISABLE_DEPRECATION_WARNINGS + avctx->reordered_opaque = frame->reordered_opaque; +FF_ENABLE_DEPRECATION_WARNINGS +#endif + + if (avctx->flags & AV_CODEC_FLAG_COPY_OPAQUE) { + int ret = av_buffer_replace(&pkt->opaque_ref, frame->opaque_ref); + if (ret < 0) + return ret; + pkt->opaque = frame->opaque; + } + + return 0; +} + +int ff_encode_encode_cb(AVCodecContext *avctx, AVPacket *avpkt, + AVFrame *frame, int *got_packet) +{ + const FFCodec *const codec = ffcodec(avctx->codec); + int ret; + + ret = codec->cb.encode(avctx, avpkt, frame, got_packet); + emms_c(); + av_assert0(ret <= 0); + + if (!ret && *got_packet) { + if (avpkt->data) { + ret = encode_make_refcounted(avctx, avpkt); + if (ret < 0) + goto unref; + // Date returned by encoders must always be ref-counted + av_assert0(avpkt->buf); + } + + // set the timestamps for the simple no-delay case + // encoders with delay have to set the timestamps themselves + if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || + (frame && (codec->caps_internal & FF_CODEC_CAP_EOF_FLUSH))) { + if (avpkt->pts == AV_NOPTS_VALUE) + avpkt->pts = frame->pts; + + if (!avpkt->duration) { + if (frame->duration) + avpkt->duration = frame->duration; + else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) { + avpkt->duration = ff_samples_to_time_base(avctx, + frame->nb_samples); + } + } + + ret = ff_encode_reordered_opaque(avctx, avpkt, frame); + if (ret < 0) + goto unref; + } + + // dts equals pts unless there is reordering + // there can be no reordering if there is no encoder delay + if (!(avctx->codec_descriptor->props & AV_CODEC_PROP_REORDER) || + !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || + (codec->caps_internal & FF_CODEC_CAP_EOF_FLUSH)) + avpkt->dts = avpkt->pts; + } else { +unref: + av_packet_unref(avpkt); + } + + if (frame) + av_frame_unref(frame); + + return ret; +} + +static int encode_simple_internal(AVCodecContext *avctx, AVPacket *avpkt) +{ + AVCodecInternal *avci = avctx->internal; + AVFrame *frame = avci->in_frame; + const FFCodec *const codec = ffcodec(avctx->codec); + int got_packet; + int ret; + + if (avci->draining_done) + return AVERROR_EOF; + + if (!frame->buf[0] && !avci->draining) { + av_frame_unref(frame); + ret = ff_encode_get_frame(avctx, frame); + if (ret < 0 && ret != AVERROR_EOF) + return ret; + } + + if (!frame->buf[0]) { + if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY || + avci->frame_thread_encoder)) + return AVERROR_EOF; + + // Flushing is signaled with a NULL frame + frame = NULL; + } + + got_packet = 0; + + av_assert0(codec->cb_type == FF_CODEC_CB_TYPE_ENCODE); + + if (CONFIG_FRAME_THREAD_ENCODER && avci->frame_thread_encoder) + /* This will unref frame. */ + ret = ff_thread_video_encode_frame(avctx, avpkt, frame, &got_packet); + else { + ret = ff_encode_encode_cb(avctx, avpkt, frame, &got_packet); + } + + if (avci->draining && !got_packet) + avci->draining_done = 1; + + return ret; +} + +static int encode_simple_receive_packet(AVCodecContext *avctx, AVPacket *avpkt) +{ + int ret; + + while (!avpkt->data && !avpkt->side_data) { + ret = encode_simple_internal(avctx, avpkt); + if (ret < 0) + return ret; + } + + return 0; +} + +static int encode_receive_packet_internal(AVCodecContext *avctx, AVPacket *avpkt) +{ + AVCodecInternal *avci = avctx->internal; + int ret; + + if (avci->draining_done) + return AVERROR_EOF; + + av_assert0(!avpkt->data && !avpkt->side_data); + + if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) { + if ((avctx->flags & AV_CODEC_FLAG_PASS1) && avctx->stats_out) + avctx->stats_out[0] = '\0'; + if (av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) + return AVERROR(EINVAL); + } + + if (ffcodec(avctx->codec)->cb_type == FF_CODEC_CB_TYPE_RECEIVE_PACKET) { + ret = ffcodec(avctx->codec)->cb.receive_packet(avctx, avpkt); + if (ret < 0) + av_packet_unref(avpkt); + else + // Encoders must always return ref-counted buffers. + // Side-data only packets have no data and can be not ref-counted. + av_assert0(!avpkt->data || avpkt->buf); + } else + ret = encode_simple_receive_packet(avctx, avpkt); + if (ret >= 0) + avpkt->flags |= encode_ctx(avci)->intra_only_flag; + + if (ret == AVERROR_EOF) + avci->draining_done = 1; + + return ret; +} + +#if CONFIG_LCMS2 +static int encode_generate_icc_profile(AVCodecContext *avctx, AVFrame *frame) +{ + enum AVColorTransferCharacteristic trc = frame->color_trc; + enum AVColorPrimaries prim = frame->color_primaries; + const FFCodec *const codec = ffcodec(avctx->codec); + AVCodecInternal *avci = avctx->internal; + cmsHPROFILE profile; + int ret; + + /* don't generate ICC profiles if disabled or unsupported */ + if (!(avctx->flags2 & AV_CODEC_FLAG2_ICC_PROFILES)) + return 0; + if (!(codec->caps_internal & FF_CODEC_CAP_ICC_PROFILES)) + return 0; + + if (trc == AVCOL_TRC_UNSPECIFIED) + trc = avctx->color_trc; + if (prim == AVCOL_PRI_UNSPECIFIED) + prim = avctx->color_primaries; + if (trc == AVCOL_TRC_UNSPECIFIED || prim == AVCOL_PRI_UNSPECIFIED) + return 0; /* can't generate ICC profile with missing csp tags */ + + if (av_frame_get_side_data(frame, AV_FRAME_DATA_ICC_PROFILE)) + return 0; /* don't overwrite existing ICC profile */ + + if (!avci->icc.avctx) { + ret = ff_icc_context_init(&avci->icc, avctx); + if (ret < 0) + return ret; + } + + ret = ff_icc_profile_generate(&avci->icc, prim, trc, &profile); + if (ret < 0) + return ret; + + ret = ff_icc_profile_attach(&avci->icc, profile, frame); + cmsCloseProfile(profile); + return ret; +} +#else /* !CONFIG_LCMS2 */ +static int encode_generate_icc_profile(av_unused AVCodecContext *c, av_unused AVFrame *f) +{ + return 0; +} +#endif + +static int encode_send_frame_internal(AVCodecContext *avctx, const AVFrame *src) +{ + AVCodecInternal *avci = avctx->internal; + EncodeContext *ec = encode_ctx(avci); + AVFrame *dst = avci->buffer_frame; + int ret; + + if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) { + /* extract audio service type metadata */ + AVFrameSideData *sd = av_frame_get_side_data(src, AV_FRAME_DATA_AUDIO_SERVICE_TYPE); + if (sd && sd->size >= sizeof(enum AVAudioServiceType)) + avctx->audio_service_type = *(enum AVAudioServiceType*)sd->data; + + /* check for valid frame size */ + if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) { + /* if we already got an undersized frame, that must have been the last */ + if (ec->last_audio_frame) { + av_log(avctx, AV_LOG_ERROR, "frame_size (%d) was not respected for a non-last frame\n", avctx->frame_size); + return AVERROR(EINVAL); + } + if (src->nb_samples > avctx->frame_size) { + av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) > frame_size (%d)\n", src->nb_samples, avctx->frame_size); + return AVERROR(EINVAL); + } + if (src->nb_samples < avctx->frame_size) { + ec->last_audio_frame = 1; + if (!(avctx->codec->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME)) { + int pad_samples = avci->pad_samples ? avci->pad_samples : avctx->frame_size; + int out_samples = (src->nb_samples + pad_samples - 1) / pad_samples * pad_samples; + + if (out_samples != src->nb_samples) { + ret = pad_last_frame(avctx, dst, src, out_samples); + if (ret < 0) + return ret; + goto finish; + } + } + } + } + } + + ret = av_frame_ref(dst, src); + if (ret < 0) + return ret; + +finish: + + if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) { + ret = encode_generate_icc_profile(avctx, dst); + if (ret < 0) + return ret; + } + + // unset frame duration unless AV_CODEC_FLAG_FRAME_DURATION is set, + // since otherwise we cannot be sure that whatever value it has is in the + // right timebase, so we would produce an incorrect value, which is worse + // than none at all + if (!(avctx->flags & AV_CODEC_FLAG_FRAME_DURATION)) + dst->duration = 0; + + return 0; +} + +int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame) +{ + AVCodecInternal *avci = avctx->internal; + int ret; + + if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec)) + return AVERROR(EINVAL); + + if (avci->draining) + return AVERROR_EOF; + + if (avci->buffer_frame->buf[0]) + return AVERROR(EAGAIN); + + if (!frame) { + avci->draining = 1; + } else { + ret = encode_send_frame_internal(avctx, frame); + if (ret < 0) + return ret; + } + + if (!avci->buffer_pkt->data && !avci->buffer_pkt->side_data) { + ret = encode_receive_packet_internal(avctx, avci->buffer_pkt); + if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) + return ret; + } + + avctx->frame_num++; +#if FF_API_AVCTX_FRAME_NUMBER +FF_DISABLE_DEPRECATION_WARNINGS + avctx->frame_number = avctx->frame_num; +FF_ENABLE_DEPRECATION_WARNINGS +#endif + + return 0; +} + +int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt) +{ + AVCodecInternal *avci = avctx->internal; + int ret; + + av_packet_unref(avpkt); + + if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec)) + return AVERROR(EINVAL); + + if (avci->buffer_pkt->data || avci->buffer_pkt->side_data) { + av_packet_move_ref(avpkt, avci->buffer_pkt); + } else { + ret = encode_receive_packet_internal(avctx, avpkt); + if (ret < 0) + return ret; + } + + return 0; +} + +static int encode_preinit_video(AVCodecContext *avctx) +{ + const AVCodec *c = avctx->codec; + const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(avctx->pix_fmt); + int i; + + if (!av_get_pix_fmt_name(avctx->pix_fmt)) { + av_log(avctx, AV_LOG_ERROR, "Invalid video pixel format: %d\n", + avctx->pix_fmt); + return AVERROR(EINVAL); + } + + if (c->pix_fmts) { + for (i = 0; c->pix_fmts[i] != AV_PIX_FMT_NONE; i++) + if (avctx->pix_fmt == c->pix_fmts[i]) + break; + if (c->pix_fmts[i] == AV_PIX_FMT_NONE) { + av_log(avctx, AV_LOG_ERROR, + "Specified pixel format %s is not supported by the %s encoder.\n", + av_get_pix_fmt_name(avctx->pix_fmt), c->name); + + av_log(avctx, AV_LOG_ERROR, "Supported pixel formats:\n"); + for (int p = 0; c->pix_fmts[p] != AV_PIX_FMT_NONE; p++) { + av_log(avctx, AV_LOG_ERROR, " %s\n", + av_get_pix_fmt_name(c->pix_fmts[p])); + } + + return AVERROR(EINVAL); + } + if (c->pix_fmts[i] == AV_PIX_FMT_YUVJ420P || + c->pix_fmts[i] == AV_PIX_FMT_YUVJ411P || + c->pix_fmts[i] == AV_PIX_FMT_YUVJ422P || + c->pix_fmts[i] == AV_PIX_FMT_YUVJ440P || + c->pix_fmts[i] == AV_PIX_FMT_YUVJ444P) + avctx->color_range = AVCOL_RANGE_JPEG; + } + + if ( avctx->bits_per_raw_sample < 0 + || (avctx->bits_per_raw_sample > 8 && pixdesc->comp[0].depth <= 8)) { + av_log(avctx, AV_LOG_WARNING, "Specified bit depth %d not possible with the specified pixel formats depth %d\n", + avctx->bits_per_raw_sample, pixdesc->comp[0].depth); + avctx->bits_per_raw_sample = pixdesc->comp[0].depth; + } + if (avctx->width <= 0 || avctx->height <= 0) { + av_log(avctx, AV_LOG_ERROR, "dimensions not set\n"); + return AVERROR(EINVAL); + } + +#if FF_API_TICKS_PER_FRAME +FF_DISABLE_DEPRECATION_WARNINGS + if (avctx->ticks_per_frame && avctx->time_base.num && + 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); + return AVERROR(EINVAL); + } +FF_ENABLE_DEPRECATION_WARNINGS +#endif + + 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"); + return AVERROR(EINVAL); + } + if (avctx->sw_pix_fmt != AV_PIX_FMT_NONE && + avctx->sw_pix_fmt != frames_ctx->sw_format) { + av_log(avctx, AV_LOG_ERROR, + "Mismatching AVCodecContext.sw_pix_fmt (%s) " + "and AVHWFramesContext.sw_format (%s)\n", + av_get_pix_fmt_name(avctx->sw_pix_fmt), + av_get_pix_fmt_name(frames_ctx->sw_format)); + return AVERROR(EINVAL); + } + avctx->sw_pix_fmt = frames_ctx->sw_format; + } + + return 0; +} + +static int encode_preinit_audio(AVCodecContext *avctx) +{ + const AVCodec *c = avctx->codec; + int i; + + if (!av_get_sample_fmt_name(avctx->sample_fmt)) { + av_log(avctx, AV_LOG_ERROR, "Invalid audio sample format: %d\n", + avctx->sample_fmt); + return AVERROR(EINVAL); + } + if (avctx->sample_rate <= 0) { + av_log(avctx, AV_LOG_ERROR, "Invalid audio sample rate: %d\n", + avctx->sample_rate); + return AVERROR(EINVAL); + } + + if (c->sample_fmts) { + for (i = 0; c->sample_fmts[i] != AV_SAMPLE_FMT_NONE; i++) { + if (avctx->sample_fmt == c->sample_fmts[i]) + break; + if (avctx->ch_layout.nb_channels == 1 && + av_get_planar_sample_fmt(avctx->sample_fmt) == + av_get_planar_sample_fmt(c->sample_fmts[i])) { + avctx->sample_fmt = c->sample_fmts[i]; + break; + } + } + if (c->sample_fmts[i] == AV_SAMPLE_FMT_NONE) { + av_log(avctx, AV_LOG_ERROR, + "Specified sample format %s is not supported by the %s encoder\n", + av_get_sample_fmt_name(avctx->sample_fmt), c->name); + + av_log(avctx, AV_LOG_ERROR, "Supported sample formats:\n"); + for (int p = 0; c->sample_fmts[p] != AV_SAMPLE_FMT_NONE; p++) { + av_log(avctx, AV_LOG_ERROR, " %s\n", + av_get_sample_fmt_name(c->sample_fmts[p])); + } + + return AVERROR(EINVAL); + } + } + if (c->supported_samplerates) { + for (i = 0; c->supported_samplerates[i] != 0; i++) + if (avctx->sample_rate == c->supported_samplerates[i]) + break; + if (c->supported_samplerates[i] == 0) { + av_log(avctx, AV_LOG_ERROR, + "Specified sample rate %d is not supported by the %s encoder\n", + avctx->sample_rate, c->name); + + av_log(avctx, AV_LOG_ERROR, "Supported sample rates:\n"); + for (int p = 0; c->supported_samplerates[p]; p++) + av_log(avctx, AV_LOG_ERROR, " %d\n", c->supported_samplerates[p]); + + return AVERROR(EINVAL); + } + } + if (c->ch_layouts) { + for (i = 0; c->ch_layouts[i].nb_channels; i++) { + if (!av_channel_layout_compare(&avctx->ch_layout, &c->ch_layouts[i])) + break; + } + if (!c->ch_layouts[i].nb_channels) { + char buf[512]; + int ret = av_channel_layout_describe(&avctx->ch_layout, buf, sizeof(buf)); + av_log(avctx, AV_LOG_ERROR, + "Specified channel layout '%s' is not supported by the %s encoder\n", + ret > 0 ? buf : "?", c->name); + + av_log(avctx, AV_LOG_ERROR, "Supported channel layouts:\n"); + for (int p = 0; c->ch_layouts[p].nb_channels; p++) { + ret = av_channel_layout_describe(&c->ch_layouts[p], buf, sizeof(buf)); + av_log(avctx, AV_LOG_ERROR, " %s\n", ret > 0 ? buf : "?"); + } + return AVERROR(EINVAL); + } + } + + if (!avctx->bits_per_raw_sample) + avctx->bits_per_raw_sample = 8 * av_get_bytes_per_sample(avctx->sample_fmt); + + return 0; +} + +int ff_encode_preinit(AVCodecContext *avctx) +{ + AVCodecInternal *avci = avctx->internal; + EncodeContext *ec = encode_ctx(avci); + int ret = 0; + + if (avctx->time_base.num <= 0 || avctx->time_base.den <= 0) { + av_log(avctx, AV_LOG_ERROR, "The encoder timebase is not set.\n"); + return AVERROR(EINVAL); + } + + if (avctx->flags & AV_CODEC_FLAG_COPY_OPAQUE && + !(avctx->codec->capabilities & AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE)) { + av_log(avctx, AV_LOG_ERROR, "The copy_opaque flag is set, but the " + "encoder does not support it.\n"); + return AVERROR(EINVAL); + } + + switch (avctx->codec_type) { + case AVMEDIA_TYPE_VIDEO: ret = encode_preinit_video(avctx); break; + case AVMEDIA_TYPE_AUDIO: ret = encode_preinit_audio(avctx); break; + } + if (ret < 0) + return ret; + + if ( (avctx->codec_type == AVMEDIA_TYPE_VIDEO || avctx->codec_type == AVMEDIA_TYPE_AUDIO) + && avctx->bit_rate>0 && avctx->bit_rate<1000) { + av_log(avctx, AV_LOG_WARNING, "Bitrate %"PRId64" is extremely low, maybe you mean %"PRId64"k\n", avctx->bit_rate, avctx->bit_rate); + } + + if (!avctx->rc_initial_buffer_occupancy) + avctx->rc_initial_buffer_occupancy = avctx->rc_buffer_size * 3LL / 4; + + if (avctx->codec_descriptor->props & AV_CODEC_PROP_INTRA_ONLY) + ec->intra_only_flag = AV_PKT_FLAG_KEY; + + if (ffcodec(avctx->codec)->cb_type == FF_CODEC_CB_TYPE_ENCODE) { + avci->in_frame = av_frame_alloc(); + if (!avci->in_frame) + return AVERROR(ENOMEM); + } + + if ((avctx->flags & AV_CODEC_FLAG_RECON_FRAME)) { + if (!(avctx->codec->capabilities & AV_CODEC_CAP_ENCODER_RECON_FRAME)) { + av_log(avctx, AV_LOG_ERROR, "Reconstructed frame output requested " + "from an encoder not supporting it\n"); + return AVERROR(ENOSYS); + } + + avci->recon_frame = av_frame_alloc(); + if (!avci->recon_frame) + return AVERROR(ENOMEM); + } + + if (CONFIG_FRAME_THREAD_ENCODER) { + ret = ff_frame_thread_encoder_init(avctx); + if (ret < 0) + return ret; + } + + return 0; +} + +int ff_encode_alloc_frame(AVCodecContext *avctx, AVFrame *frame) +{ + int ret; + + switch (avctx->codec->type) { + case AVMEDIA_TYPE_VIDEO: + frame->format = avctx->pix_fmt; + if (frame->width <= 0 || frame->height <= 0) { + frame->width = FFMAX(avctx->width, avctx->coded_width); + frame->height = FFMAX(avctx->height, avctx->coded_height); + } + + break; + case AVMEDIA_TYPE_AUDIO: + frame->sample_rate = avctx->sample_rate; + frame->format = avctx->sample_fmt; + if (!frame->ch_layout.nb_channels) { + ret = av_channel_layout_copy(&frame->ch_layout, &avctx->ch_layout); + if (ret < 0) + return ret; + } + break; + } + + ret = avcodec_default_get_buffer2(avctx, frame, 0); + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n"); + av_frame_unref(frame); + return ret; + } + + return 0; +} + +int ff_encode_receive_frame(AVCodecContext *avctx, AVFrame *frame) +{ + AVCodecInternal *avci = avctx->internal; + + if (!avci->recon_frame) + return AVERROR(EINVAL); + if (!avci->recon_frame->buf[0]) + return avci->draining_done ? AVERROR_EOF : AVERROR(EAGAIN); + + av_frame_move_ref(frame, avci->recon_frame); + return 0; +} + +void ff_encode_flush_buffers(AVCodecContext *avctx) +{ + AVCodecInternal *avci = avctx->internal; + + if (avci->in_frame) + av_frame_unref(avci->in_frame); + if (avci->recon_frame) + av_frame_unref(avci->recon_frame); +} + +AVCodecInternal *ff_encode_internal_alloc(void) +{ + return av_mallocz(sizeof(EncodeContext)); +} + +AVCPBProperties *ff_encode_add_cpb_side_data(AVCodecContext *avctx) +{ + AVPacketSideData *tmp; + AVCPBProperties *props; + size_t size; + int i; + + for (i = 0; i < avctx->nb_coded_side_data; i++) + if (avctx->coded_side_data[i].type == AV_PKT_DATA_CPB_PROPERTIES) + return (AVCPBProperties *)avctx->coded_side_data[i].data; + + 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; +} |