| /* |
| * 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/frame.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/internal.h" |
| #include "libavutil/samplefmt.h" |
| |
| #include "avcodec.h" |
| #include "frame_thread_encoder.h" |
| #include "internal.h" |
| |
| int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size) |
| { |
| if (avpkt->size < 0) { |
| av_log(avctx, AV_LOG_ERROR, "Invalid negative user packet size %d\n", avpkt->size); |
| return AVERROR(EINVAL); |
| } |
| 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); |
| } |
| |
| if (avctx && 2*min_size < size) { // FIXME The factor needs to be finetuned |
| av_assert0(!avpkt->data || avpkt->data != avctx->internal->byte_buffer); |
| if (!avpkt->data || avpkt->size < size) { |
| av_fast_padded_malloc(&avctx->internal->byte_buffer, &avctx->internal->byte_buffer_size, size); |
| avpkt->data = avctx->internal->byte_buffer; |
| avpkt->size = avctx->internal->byte_buffer_size; |
| } |
| } |
| |
| if (avpkt->data) { |
| AVBufferRef *buf = avpkt->buf; |
| |
| if (avpkt->size < size) { |
| av_log(avctx, AV_LOG_ERROR, "User packet is too small (%d < %"PRId64")\n", avpkt->size, size); |
| return AVERROR(EINVAL); |
| } |
| |
| av_init_packet(avpkt); |
| avpkt->buf = buf; |
| avpkt->size = size; |
| return 0; |
| } else { |
| int ret = av_new_packet(avpkt, size); |
| if (ret < 0) |
| av_log(avctx, AV_LOG_ERROR, "Failed to allocate packet of size %"PRId64"\n", size); |
| return ret; |
| } |
| } |
| |
| int ff_alloc_packet(AVPacket *avpkt, int size) |
| { |
| return ff_alloc_packet2(NULL, avpkt, size, 0); |
| } |
| |
| /** |
| * Pad last frame with silence. |
| */ |
| static int pad_last_frame(AVCodecContext *s, AVFrame **dst, const AVFrame *src) |
| { |
| AVFrame *frame = NULL; |
| int ret; |
| |
| if (!(frame = av_frame_alloc())) |
| return AVERROR(ENOMEM); |
| |
| frame->format = src->format; |
| frame->channel_layout = src->channel_layout; |
| frame->channels = src->channels; |
| frame->nb_samples = s->frame_size; |
| ret = av_frame_get_buffer(frame, 32); |
| 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->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->channels, s->sample_fmt)) < 0) |
| goto fail; |
| |
| *dst = frame; |
| |
| return 0; |
| |
| fail: |
| av_frame_free(&frame); |
| return ret; |
| } |
| |
| int attribute_align_arg avcodec_encode_audio2(AVCodecContext *avctx, |
| AVPacket *avpkt, |
| const AVFrame *frame, |
| int *got_packet_ptr) |
| { |
| AVFrame *extended_frame = NULL; |
| AVFrame *padded_frame = NULL; |
| int ret; |
| AVPacket user_pkt = *avpkt; |
| int needs_realloc = !user_pkt.data; |
| |
| *got_packet_ptr = 0; |
| |
| if (!avctx->codec->encode2) { |
| av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n"); |
| return AVERROR(ENOSYS); |
| } |
| |
| if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) { |
| av_packet_unref(avpkt); |
| return 0; |
| } |
| |
| /* ensure that extended_data is properly set */ |
| if (frame && !frame->extended_data) { |
| if (av_sample_fmt_is_planar(avctx->sample_fmt) && |
| avctx->channels > AV_NUM_DATA_POINTERS) { |
| av_log(avctx, AV_LOG_ERROR, "Encoding to a planar sample format, " |
| "with more than %d channels, but extended_data is not set.\n", |
| AV_NUM_DATA_POINTERS); |
| return AVERROR(EINVAL); |
| } |
| av_log(avctx, AV_LOG_WARNING, "extended_data is not set.\n"); |
| |
| extended_frame = av_frame_alloc(); |
| if (!extended_frame) |
| return AVERROR(ENOMEM); |
| |
| memcpy(extended_frame, frame, sizeof(AVFrame)); |
| extended_frame->extended_data = extended_frame->data; |
| frame = extended_frame; |
| } |
| |
| /* extract audio service type metadata */ |
| if (frame) { |
| AVFrameSideData *sd = av_frame_get_side_data(frame, 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 (frame) { |
| if (avctx->codec->capabilities & AV_CODEC_CAP_SMALL_LAST_FRAME) { |
| if (frame->nb_samples > avctx->frame_size) { |
| av_log(avctx, AV_LOG_ERROR, "more samples than frame size (avcodec_encode_audio2)\n"); |
| ret = AVERROR(EINVAL); |
| goto end; |
| } |
| } else if (!(avctx->codec->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE)) { |
| if (frame->nb_samples < avctx->frame_size && |
| !avctx->internal->last_audio_frame) { |
| ret = pad_last_frame(avctx, &padded_frame, frame); |
| if (ret < 0) |
| goto end; |
| |
| frame = padded_frame; |
| avctx->internal->last_audio_frame = 1; |
| } |
| |
| if (frame->nb_samples != avctx->frame_size) { |
| av_log(avctx, AV_LOG_ERROR, "nb_samples (%d) != frame_size (%d) (avcodec_encode_audio2)\n", frame->nb_samples, avctx->frame_size); |
| ret = AVERROR(EINVAL); |
| goto end; |
| } |
| } |
| } |
| |
| av_assert0(avctx->codec->encode2); |
| |
| ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr); |
| if (!ret) { |
| if (*got_packet_ptr) { |
| if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) { |
| if (avpkt->pts == AV_NOPTS_VALUE) |
| avpkt->pts = frame->pts; |
| if (!avpkt->duration) |
| avpkt->duration = ff_samples_to_time_base(avctx, |
| frame->nb_samples); |
| } |
| avpkt->dts = avpkt->pts; |
| } else { |
| avpkt->size = 0; |
| } |
| } |
| if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) { |
| needs_realloc = 0; |
| if (user_pkt.data) { |
| if (user_pkt.size >= avpkt->size) { |
| memcpy(user_pkt.data, avpkt->data, avpkt->size); |
| } else { |
| av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size); |
| avpkt->size = user_pkt.size; |
| ret = -1; |
| } |
| avpkt->buf = user_pkt.buf; |
| avpkt->data = user_pkt.data; |
| } else if (!avpkt->buf) { |
| ret = av_packet_make_refcounted(avpkt); |
| if (ret < 0) |
| goto end; |
| } |
| } |
| |
| if (!ret) { |
| if (needs_realloc && avpkt->data) { |
| ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE); |
| if (ret >= 0) |
| avpkt->data = avpkt->buf->data; |
| } |
| if (frame) |
| avctx->frame_number++; |
| } |
| |
| if (ret < 0 || !*got_packet_ptr) { |
| av_packet_unref(avpkt); |
| goto end; |
| } |
| |
| /* NOTE: if we add any audio encoders which output non-keyframe packets, |
| * this needs to be moved to the encoders, but for now we can do it |
| * here to simplify things */ |
| avpkt->flags |= AV_PKT_FLAG_KEY; |
| |
| end: |
| av_frame_free(&padded_frame); |
| av_free(extended_frame); |
| |
| return ret; |
| } |
| |
| int attribute_align_arg avcodec_encode_video2(AVCodecContext *avctx, |
| AVPacket *avpkt, |
| const AVFrame *frame, |
| int *got_packet_ptr) |
| { |
| int ret; |
| AVPacket user_pkt = *avpkt; |
| int needs_realloc = !user_pkt.data; |
| |
| *got_packet_ptr = 0; |
| |
| if (!avctx->codec->encode2) { |
| av_log(avctx, AV_LOG_ERROR, "This encoder requires using the avcodec_send_frame() API.\n"); |
| return AVERROR(ENOSYS); |
| } |
| |
| if(CONFIG_FRAME_THREAD_ENCODER && |
| avctx->internal->frame_thread_encoder && (avctx->active_thread_type&FF_THREAD_FRAME)) |
| return ff_thread_video_encode_frame(avctx, avpkt, frame, got_packet_ptr); |
| |
| if ((avctx->flags&AV_CODEC_FLAG_PASS1) && avctx->stats_out) |
| avctx->stats_out[0] = '\0'; |
| |
| if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY) && !frame) { |
| av_packet_unref(avpkt); |
| return 0; |
| } |
| |
| if (av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) |
| return AVERROR(EINVAL); |
| |
| if (frame && frame->format == AV_PIX_FMT_NONE) |
| av_log(avctx, AV_LOG_WARNING, "AVFrame.format is not set\n"); |
| if (frame && (frame->width == 0 || frame->height == 0)) |
| av_log(avctx, AV_LOG_WARNING, "AVFrame.width or height is not set\n"); |
| |
| av_assert0(avctx->codec->encode2); |
| |
| ret = avctx->codec->encode2(avctx, avpkt, frame, got_packet_ptr); |
| av_assert0(ret <= 0); |
| |
| emms_c(); |
| |
| if (avpkt->data && avpkt->data == avctx->internal->byte_buffer) { |
| needs_realloc = 0; |
| if (user_pkt.data) { |
| if (user_pkt.size >= avpkt->size) { |
| memcpy(user_pkt.data, avpkt->data, avpkt->size); |
| } else { |
| av_log(avctx, AV_LOG_ERROR, "Provided packet is too small, needs to be %d\n", avpkt->size); |
| avpkt->size = user_pkt.size; |
| ret = -1; |
| } |
| avpkt->buf = user_pkt.buf; |
| avpkt->data = user_pkt.data; |
| } else if (!avpkt->buf) { |
| ret = av_packet_make_refcounted(avpkt); |
| if (ret < 0) |
| return ret; |
| } |
| } |
| |
| if (!ret) { |
| if (!*got_packet_ptr) |
| avpkt->size = 0; |
| else if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) |
| avpkt->pts = avpkt->dts = frame->pts; |
| |
| if (needs_realloc && avpkt->data) { |
| ret = av_buffer_realloc(&avpkt->buf, avpkt->size + AV_INPUT_BUFFER_PADDING_SIZE); |
| if (ret >= 0) |
| avpkt->data = avpkt->buf->data; |
| } |
| |
| if (frame) |
| avctx->frame_number++; |
| } |
| |
| if (ret < 0 || !*got_packet_ptr) |
| av_packet_unref(avpkt); |
| |
| 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 = avctx->codec->encode_sub(avctx, buf, buf_size, sub); |
| avctx->frame_number++; |
| return ret; |
| } |
| |
| static int do_encode(AVCodecContext *avctx, const AVFrame *frame, int *got_packet) |
| { |
| int ret; |
| *got_packet = 0; |
| |
| av_packet_unref(avctx->internal->buffer_pkt); |
| avctx->internal->buffer_pkt_valid = 0; |
| |
| if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) { |
| ret = avcodec_encode_video2(avctx, avctx->internal->buffer_pkt, |
| frame, got_packet); |
| } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) { |
| ret = avcodec_encode_audio2(avctx, avctx->internal->buffer_pkt, |
| frame, got_packet); |
| } else { |
| ret = AVERROR(EINVAL); |
| } |
| |
| if (ret >= 0 && *got_packet) { |
| // Encoders must always return ref-counted buffers. |
| // Side-data only packets have no data and can be not ref-counted. |
| av_assert0(!avctx->internal->buffer_pkt->data || avctx->internal->buffer_pkt->buf); |
| avctx->internal->buffer_pkt_valid = 1; |
| ret = 0; |
| } else { |
| av_packet_unref(avctx->internal->buffer_pkt); |
| } |
| |
| return ret; |
| } |
| |
| int attribute_align_arg avcodec_send_frame(AVCodecContext *avctx, const AVFrame *frame) |
| { |
| if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec)) |
| return AVERROR(EINVAL); |
| |
| if (avctx->internal->draining) |
| return AVERROR_EOF; |
| |
| if (!frame) { |
| avctx->internal->draining = 1; |
| |
| if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) |
| return 0; |
| } |
| |
| if (avctx->codec->send_frame) |
| return avctx->codec->send_frame(avctx, frame); |
| |
| // Emulation via old API. Do it here instead of avcodec_receive_packet, because: |
| // 1. if the AVFrame is not refcounted, the copying will be much more |
| // expensive than copying the packet data |
| // 2. assume few users use non-refcounted AVPackets, so usually no copy is |
| // needed |
| |
| if (avctx->internal->buffer_pkt_valid) |
| return AVERROR(EAGAIN); |
| |
| return do_encode(avctx, frame, &(int){0}); |
| } |
| |
| int attribute_align_arg avcodec_receive_packet(AVCodecContext *avctx, AVPacket *avpkt) |
| { |
| av_packet_unref(avpkt); |
| |
| if (!avcodec_is_open(avctx) || !av_codec_is_encoder(avctx->codec)) |
| return AVERROR(EINVAL); |
| |
| if (avctx->codec->receive_packet) { |
| if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) |
| return AVERROR_EOF; |
| return avctx->codec->receive_packet(avctx, avpkt); |
| } |
| |
| // Emulation via old API. |
| |
| if (!avctx->internal->buffer_pkt_valid) { |
| int got_packet; |
| int ret; |
| if (!avctx->internal->draining) |
| return AVERROR(EAGAIN); |
| ret = do_encode(avctx, NULL, &got_packet); |
| if (ret < 0) |
| return ret; |
| if (ret >= 0 && !got_packet) |
| return AVERROR_EOF; |
| } |
| |
| av_packet_move_ref(avpkt, avctx->internal->buffer_pkt); |
| avctx->internal->buffer_pkt_valid = 0; |
| return 0; |
| } |