/* * 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/mem.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++; 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 (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++; 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); const enum AVPixelFormat *pix_fmts; int ret, i, num_pix_fmts; 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); } ret = avcodec_get_supported_config(avctx, NULL, AV_CODEC_CONFIG_PIX_FORMAT, 0, (const void **) &pix_fmts, &num_pix_fmts); if (ret < 0) return ret; if (pix_fmts) { for (i = 0; i < num_pix_fmts; i++) if (avctx->pix_fmt == pix_fmts[i]) break; if (i == num_pix_fmts) { 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; pix_fmts[p] != AV_PIX_FMT_NONE; p++) { av_log(avctx, AV_LOG_ERROR, " %s\n", av_get_pix_fmt_name(pix_fmts[p])); } return AVERROR(EINVAL); } if (pix_fmts[i] == AV_PIX_FMT_YUVJ420P || pix_fmts[i] == AV_PIX_FMT_YUVJ411P || pix_fmts[i] == AV_PIX_FMT_YUVJ422P || pix_fmts[i] == AV_PIX_FMT_YUVJ440P || 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; const enum AVSampleFormat *sample_fmts; const int *supported_samplerates; const AVChannelLayout *ch_layouts; int ret, i, num_sample_fmts, num_samplerates, num_ch_layouts; 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); } ret = avcodec_get_supported_config(avctx, NULL, AV_CODEC_CONFIG_SAMPLE_FORMAT, 0, (const void **) &sample_fmts, &num_sample_fmts); if (ret < 0) return ret; if (sample_fmts) { for (i = 0; i < num_sample_fmts; i++) { if (avctx->sample_fmt == sample_fmts[i]) break; if (avctx->ch_layout.nb_channels == 1 && av_get_planar_sample_fmt(avctx->sample_fmt) == av_get_planar_sample_fmt(sample_fmts[i])) { avctx->sample_fmt = sample_fmts[i]; break; } } if (i == num_sample_fmts) { 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; sample_fmts[p] != AV_SAMPLE_FMT_NONE; p++) { av_log(avctx, AV_LOG_ERROR, " %s\n", av_get_sample_fmt_name(sample_fmts[p])); } return AVERROR(EINVAL); } } ret = avcodec_get_supported_config(avctx, NULL, AV_CODEC_CONFIG_SAMPLE_RATE, 0, (const void **) &supported_samplerates, &num_samplerates); if (ret < 0) return ret; if (supported_samplerates) { for (i = 0; i < num_samplerates; i++) if (avctx->sample_rate == supported_samplerates[i]) break; if (i == num_samplerates) { 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; supported_samplerates[p]; p++) av_log(avctx, AV_LOG_ERROR, " %d\n", supported_samplerates[p]); return AVERROR(EINVAL); } } ret = avcodec_get_supported_config(avctx, NULL, AV_CODEC_CONFIG_CHANNEL_LAYOUT, 0, (const void **) &ch_layouts, &num_ch_layouts); if (ret < 0) return ret; if (ch_layouts) { for (i = 0; i < num_ch_layouts; i++) { if (!av_channel_layout_compare(&avctx->ch_layout, &ch_layouts[i])) break; } if (i == num_ch_layouts) { 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; ch_layouts[p].nb_channels; p++) { ret = av_channel_layout_describe(&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 = av_get_exact_bits_per_sample(avctx->codec_id); 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); } for (int i = 0; ff_sd_global_map[i].packet < AV_PKT_DATA_NB; i++) { const enum AVPacketSideDataType type_packet = ff_sd_global_map[i].packet; const enum AVFrameSideDataType type_frame = ff_sd_global_map[i].frame; const AVFrameSideData *sd_frame; AVPacketSideData *sd_packet; sd_frame = av_frame_side_data_get(avctx->decoded_side_data, avctx->nb_decoded_side_data, type_frame); if (!sd_frame || av_packet_side_data_get(avctx->coded_side_data, avctx->nb_coded_side_data, type_packet)) continue; sd_packet = av_packet_side_data_new(&avctx->coded_side_data, &avctx->nb_coded_side_data, type_packet, sd_frame->size, 0); if (!sd_packet) return AVERROR(ENOMEM); memcpy(sd_packet->data, sd_frame->data, sd_frame->size); } 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; }