From 3fe2a01df7f2c193805809f57b61d79607572351 Mon Sep 17 00:00:00 2001 From: Anton Khirnov Date: Wed, 26 Oct 2016 08:10:19 +0200 Subject: [PATCH] lavc: move decoding-related code from utils.c to a new file --- libavcodec/Makefile | 1 + libavcodec/decode.c | 924 ++++++++++++++++++++++++++++++++++++++++++++ libavcodec/utils.c | 889 ------------------------------------------ 3 files changed, 925 insertions(+), 889 deletions(-) create mode 100644 libavcodec/decode.c diff --git a/libavcodec/Makefile b/libavcodec/Makefile index fe723155a5..dee3d1398e 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -23,6 +23,7 @@ OBJS = allcodecs.o \ bsf.o \ codec_desc.o \ d3d11va.o \ + decode.o \ dirac.o \ dv_profile.o \ encode.o \ diff --git a/libavcodec/decode.c b/libavcodec/decode.c new file mode 100644 index 0000000000..42bcee2d17 --- /dev/null +++ b/libavcodec/decode.c @@ -0,0 +1,924 @@ +/* + * generic decoding-related code + * + * This file is part of Libav. + * + * Libav 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. + * + * Libav 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 Libav; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#include +#include + +#include "config.h" + +#include "libavutil/avassert.h" +#include "libavutil/common.h" +#include "libavutil/frame.h" +#include "libavutil/hwcontext.h" +#include "libavutil/imgutils.h" + +#include "avcodec.h" +#include "bytestream.h" +#include "internal.h" +#include "thread.h" + +static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt) +{ + int size = 0, ret; + const uint8_t *data; + uint32_t flags; + + data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size); + if (!data) + return 0; + + if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) { + av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter " + "changes, but PARAM_CHANGE side data was sent to it.\n"); + ret = AVERROR(EINVAL); + goto fail2; + } + + if (size < 4) + goto fail; + + flags = bytestream_get_le32(&data); + size -= 4; + + if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) { + if (size < 4) + goto fail; + avctx->channels = bytestream_get_le32(&data); + size -= 4; + } + if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) { + if (size < 8) + goto fail; + avctx->channel_layout = bytestream_get_le64(&data); + size -= 8; + } + if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) { + if (size < 4) + goto fail; + avctx->sample_rate = bytestream_get_le32(&data); + size -= 4; + } + if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) { + if (size < 8) + goto fail; + avctx->width = bytestream_get_le32(&data); + avctx->height = bytestream_get_le32(&data); + size -= 8; + ret = ff_set_dimensions(avctx, avctx->width, avctx->height); + if (ret < 0) + goto fail2; + } + + return 0; +fail: + av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n"); + ret = AVERROR_INVALIDDATA; +fail2: + if (ret < 0) { + av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n"); + if (avctx->err_recognition & AV_EF_EXPLODE) + return ret; + } + return 0; +} + +static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame) +{ + int ret; + + /* move the original frame to our backup */ + av_frame_unref(avci->to_free); + av_frame_move_ref(avci->to_free, frame); + + /* now copy everything except the AVBufferRefs back + * note that we make a COPY of the side data, so calling av_frame_free() on + * the caller's frame will work properly */ + ret = av_frame_copy_props(frame, avci->to_free); + if (ret < 0) + return ret; + + memcpy(frame->data, avci->to_free->data, sizeof(frame->data)); + memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize)); + if (avci->to_free->extended_data != avci->to_free->data) { + int planes = av_get_channel_layout_nb_channels(avci->to_free->channel_layout); + int size = planes * sizeof(*frame->extended_data); + + if (!size) { + av_frame_unref(frame); + return AVERROR_BUG; + } + + frame->extended_data = av_malloc(size); + if (!frame->extended_data) { + av_frame_unref(frame); + return AVERROR(ENOMEM); + } + memcpy(frame->extended_data, avci->to_free->extended_data, + size); + } else + frame->extended_data = frame->data; + + frame->format = avci->to_free->format; + frame->width = avci->to_free->width; + frame->height = avci->to_free->height; + frame->channel_layout = avci->to_free->channel_layout; + frame->nb_samples = avci->to_free->nb_samples; + + return 0; +} + +static int do_decode(AVCodecContext *avctx, AVPacket *pkt) +{ + int got_frame; + int ret; + + av_assert0(!avctx->internal->buffer_frame->buf[0]); + + if (!pkt) + pkt = avctx->internal->buffer_pkt; + + // This is the lesser evil. The field is for compatibility with legacy users + // of the legacy API, and users using the new API should not be forced to + // even know about this field. + avctx->refcounted_frames = 1; + + // Some codecs (at least wma lossless) will crash when feeding drain packets + // after EOF was signaled. + if (avctx->internal->draining_done) + return AVERROR_EOF; + + if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) { + ret = avcodec_decode_video2(avctx, avctx->internal->buffer_frame, + &got_frame, pkt); + if (ret >= 0) + ret = pkt->size; + } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) { + ret = avcodec_decode_audio4(avctx, avctx->internal->buffer_frame, + &got_frame, pkt); + } else { + ret = AVERROR(EINVAL); + } + + if (ret < 0) + return ret; + + if (avctx->internal->draining && !got_frame) + avctx->internal->draining_done = 1; + + if (ret >= pkt->size) { + av_packet_unref(avctx->internal->buffer_pkt); + } else { + int consumed = ret; + + if (pkt != avctx->internal->buffer_pkt) { + av_packet_unref(avctx->internal->buffer_pkt); + if ((ret = av_packet_ref(avctx->internal->buffer_pkt, pkt)) < 0) + return ret; + } + + avctx->internal->buffer_pkt->data += consumed; + avctx->internal->buffer_pkt->size -= consumed; + avctx->internal->buffer_pkt->pts = AV_NOPTS_VALUE; + avctx->internal->buffer_pkt->dts = AV_NOPTS_VALUE; + } + + if (got_frame) + av_assert0(avctx->internal->buffer_frame->buf[0]); + + return 0; +} + +int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt) +{ + int ret; + + if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec)) + return AVERROR(EINVAL); + + if (avctx->internal->draining) + return AVERROR_EOF; + + if (!avpkt || !avpkt->size) { + avctx->internal->draining = 1; + avpkt = NULL; + + if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) + return 0; + } + + if (avctx->codec->send_packet) { + if (avpkt) { + ret = apply_param_change(avctx, (AVPacket *)avpkt); + if (ret < 0) + return ret; + } + return avctx->codec->send_packet(avctx, avpkt); + } + + // Emulation via old API. Assume avpkt is likely not refcounted, while + // decoder output is always refcounted, and avoid copying. + + if (avctx->internal->buffer_pkt->size || avctx->internal->buffer_frame->buf[0]) + return AVERROR(EAGAIN); + + // The goal is decoding the first frame of the packet without using memcpy, + // because the common case is having only 1 frame per packet (especially + // with video, but audio too). In other cases, it can't be avoided, unless + // the user is feeding refcounted packets. + return do_decode(avctx, (AVPacket *)avpkt); +} + +int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame) +{ + int ret; + + av_frame_unref(frame); + + if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec)) + return AVERROR(EINVAL); + + if (avctx->codec->receive_frame) { + if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) + return AVERROR_EOF; + return avctx->codec->receive_frame(avctx, frame); + } + + // Emulation via old API. + + if (!avctx->internal->buffer_frame->buf[0]) { + if (!avctx->internal->buffer_pkt->size && !avctx->internal->draining) + return AVERROR(EAGAIN); + + while (1) { + if ((ret = do_decode(avctx, avctx->internal->buffer_pkt)) < 0) { + av_packet_unref(avctx->internal->buffer_pkt); + return ret; + } + // Some audio decoders may consume partial data without returning + // a frame (fate-wmapro-2ch). There is no way to make the caller + // call avcodec_receive_frame() again without returning a frame, + // so try to decode more in these cases. + if (avctx->internal->buffer_frame->buf[0] || + !avctx->internal->buffer_pkt->size) + break; + } + } + + if (!avctx->internal->buffer_frame->buf[0]) + return avctx->internal->draining ? AVERROR_EOF : AVERROR(EAGAIN); + + av_frame_move_ref(frame, avctx->internal->buffer_frame); + return 0; +} + +int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, + int *got_picture_ptr, + AVPacket *avpkt) +{ + AVCodecInternal *avci = avctx->internal; + int ret; + + *got_picture_ptr = 0; + if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx)) + return -1; + + if (!avctx->codec->decode) { + av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n"); + return AVERROR(ENOSYS); + } + + avctx->internal->pkt = avpkt; + ret = apply_param_change(avctx, avpkt); + if (ret < 0) + return ret; + + av_frame_unref(picture); + + if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size || + (avctx->active_thread_type & FF_THREAD_FRAME)) { + if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) + ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr, + avpkt); + else { + ret = avctx->codec->decode(avctx, picture, got_picture_ptr, + avpkt); + if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS)) + picture->pkt_dts = avpkt->dts; + /* get_buffer is supposed to set frame parameters */ + if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) { + picture->sample_aspect_ratio = avctx->sample_aspect_ratio; + picture->width = avctx->width; + picture->height = avctx->height; + picture->format = avctx->pix_fmt; + } + } + + emms_c(); //needed to avoid an emms_c() call before every return; + + if (*got_picture_ptr) { + if (!avctx->refcounted_frames) { + int err = unrefcount_frame(avci, picture); + if (err < 0) + return err; + } + + avctx->frame_number++; + } else + av_frame_unref(picture); + } else + ret = 0; + +#if FF_API_AVCTX_TIMEBASE + if (avctx->framerate.num > 0 && avctx->framerate.den > 0) + avctx->time_base = av_inv_q(avctx->framerate); +#endif + + return ret; +} + +int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, + AVFrame *frame, + int *got_frame_ptr, + AVPacket *avpkt) +{ + AVCodecInternal *avci = avctx->internal; + int ret = 0; + + *got_frame_ptr = 0; + + if (!avctx->codec->decode) { + av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n"); + return AVERROR(ENOSYS); + } + + avctx->internal->pkt = avpkt; + + if (!avpkt->data && avpkt->size) { + av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n"); + return AVERROR(EINVAL); + } + + ret = apply_param_change(avctx, avpkt); + if (ret < 0) + return ret; + + av_frame_unref(frame); + + if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) { + ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt); + if (ret >= 0 && *got_frame_ptr) { + avctx->frame_number++; + frame->pkt_dts = avpkt->dts; + if (frame->format == AV_SAMPLE_FMT_NONE) + frame->format = avctx->sample_fmt; + + if (!avctx->refcounted_frames) { + int err = unrefcount_frame(avci, frame); + if (err < 0) + return err; + } + } else + av_frame_unref(frame); + } + + + return ret; +} + +int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, + int *got_sub_ptr, + AVPacket *avpkt) +{ + int ret; + + avctx->internal->pkt = avpkt; + *got_sub_ptr = 0; + ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt); + if (*got_sub_ptr) + avctx->frame_number++; + return ret; +} + +static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt) +{ + const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); + return desc->flags & AV_PIX_FMT_FLAG_HWACCEL; +} + +enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt) +{ + while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt)) + ++fmt; + return fmt[0]; +} + +static AVHWAccel *find_hwaccel(enum AVCodecID codec_id, + enum AVPixelFormat pix_fmt) +{ + AVHWAccel *hwaccel = NULL; + + while ((hwaccel = av_hwaccel_next(hwaccel))) + if (hwaccel->id == codec_id + && hwaccel->pix_fmt == pix_fmt) + return hwaccel; + return NULL; +} + +static int setup_hwaccel(AVCodecContext *avctx, + const enum AVPixelFormat fmt, + const char *name) +{ + AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt); + int ret = 0; + + if (!hwa) { + av_log(avctx, AV_LOG_ERROR, + "Could not find an AVHWAccel for the pixel format: %s", + name); + return AVERROR(ENOENT); + } + + if (hwa->priv_data_size) { + avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size); + if (!avctx->internal->hwaccel_priv_data) + return AVERROR(ENOMEM); + } + + if (hwa->init) { + ret = hwa->init(avctx); + if (ret < 0) { + av_freep(&avctx->internal->hwaccel_priv_data); + return ret; + } + } + + avctx->hwaccel = hwa; + + return 0; +} + +int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt) +{ + const AVPixFmtDescriptor *desc; + enum AVPixelFormat *choices; + enum AVPixelFormat ret; + unsigned n = 0; + + while (fmt[n] != AV_PIX_FMT_NONE) + ++n; + + av_assert0(n >= 1); + avctx->sw_pix_fmt = fmt[n - 1]; + av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt)); + + choices = av_malloc_array(n + 1, sizeof(*choices)); + if (!choices) + return AV_PIX_FMT_NONE; + + memcpy(choices, fmt, (n + 1) * sizeof(*choices)); + + for (;;) { + if (avctx->hwaccel && avctx->hwaccel->uninit) + avctx->hwaccel->uninit(avctx); + av_freep(&avctx->internal->hwaccel_priv_data); + avctx->hwaccel = NULL; + + av_buffer_unref(&avctx->hw_frames_ctx); + + ret = avctx->get_format(avctx, choices); + + desc = av_pix_fmt_desc_get(ret); + if (!desc) { + ret = AV_PIX_FMT_NONE; + break; + } + + if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) + break; + + if (avctx->hw_frames_ctx) { + AVHWFramesContext *hw_frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data; + if (hw_frames_ctx->format != ret) { + av_log(avctx, AV_LOG_ERROR, "Format returned from get_buffer() " + "does not match the format of provided AVHWFramesContext\n"); + ret = AV_PIX_FMT_NONE; + break; + } + } + + if (!setup_hwaccel(avctx, ret, desc->name)) + break; + + /* Remove failed hwaccel from choices */ + for (n = 0; choices[n] != ret; n++) + av_assert0(choices[n] != AV_PIX_FMT_NONE); + + do + choices[n] = choices[n + 1]; + while (choices[n++] != AV_PIX_FMT_NONE); + } + + av_freep(&choices); + return ret; +} + +static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame) +{ + FramePool *pool = avctx->internal->pool; + int i, ret; + + switch (avctx->codec_type) { + case AVMEDIA_TYPE_VIDEO: { + uint8_t *data[4]; + int linesize[4]; + int size[4] = { 0 }; + int w = frame->width; + int h = frame->height; + int tmpsize, unaligned; + + if (pool->format == frame->format && + pool->width == frame->width && pool->height == frame->height) + return 0; + + avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align); + + do { + // NOTE: do not align linesizes individually, this breaks e.g. assumptions + // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2 + av_image_fill_linesizes(linesize, avctx->pix_fmt, w); + // increase alignment of w for next try (rhs gives the lowest bit set in w) + w += w & ~(w - 1); + + unaligned = 0; + for (i = 0; i < 4; i++) + unaligned |= linesize[i] % pool->stride_align[i]; + } while (unaligned); + + tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h, + NULL, linesize); + if (tmpsize < 0) + return -1; + + for (i = 0; i < 3 && data[i + 1]; i++) + size[i] = data[i + 1] - data[i]; + size[i] = tmpsize - (data[i] - data[0]); + + for (i = 0; i < 4; i++) { + av_buffer_pool_uninit(&pool->pools[i]); + pool->linesize[i] = linesize[i]; + if (size[i]) { + pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL); + if (!pool->pools[i]) { + ret = AVERROR(ENOMEM); + goto fail; + } + } + } + pool->format = frame->format; + pool->width = frame->width; + pool->height = frame->height; + + break; + } + case AVMEDIA_TYPE_AUDIO: { + int ch = av_get_channel_layout_nb_channels(frame->channel_layout); + int planar = av_sample_fmt_is_planar(frame->format); + int planes = planar ? ch : 1; + + if (pool->format == frame->format && pool->planes == planes && + pool->channels == ch && frame->nb_samples == pool->samples) + return 0; + + av_buffer_pool_uninit(&pool->pools[0]); + ret = av_samples_get_buffer_size(&pool->linesize[0], ch, + frame->nb_samples, frame->format, 0); + if (ret < 0) + goto fail; + + pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL); + if (!pool->pools[0]) { + ret = AVERROR(ENOMEM); + goto fail; + } + + pool->format = frame->format; + pool->planes = planes; + pool->channels = ch; + pool->samples = frame->nb_samples; + break; + } + default: av_assert0(0); + } + return 0; +fail: + for (i = 0; i < 4; i++) + av_buffer_pool_uninit(&pool->pools[i]); + pool->format = -1; + pool->planes = pool->channels = pool->samples = 0; + pool->width = pool->height = 0; + return ret; +} + +static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame) +{ + FramePool *pool = avctx->internal->pool; + int planes = pool->planes; + int i; + + frame->linesize[0] = pool->linesize[0]; + + if (planes > AV_NUM_DATA_POINTERS) { + frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data)); + frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS; + frame->extended_buf = av_mallocz(frame->nb_extended_buf * + sizeof(*frame->extended_buf)); + if (!frame->extended_data || !frame->extended_buf) { + av_freep(&frame->extended_data); + av_freep(&frame->extended_buf); + return AVERROR(ENOMEM); + } + } else + frame->extended_data = frame->data; + + for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) { + frame->buf[i] = av_buffer_pool_get(pool->pools[0]); + if (!frame->buf[i]) + goto fail; + frame->extended_data[i] = frame->data[i] = frame->buf[i]->data; + } + for (i = 0; i < frame->nb_extended_buf; i++) { + frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]); + if (!frame->extended_buf[i]) + goto fail; + frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data; + } + + if (avctx->debug & FF_DEBUG_BUFFERS) + av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame); + + return 0; +fail: + av_frame_unref(frame); + return AVERROR(ENOMEM); +} + +static int video_get_buffer(AVCodecContext *s, AVFrame *pic) +{ + FramePool *pool = s->internal->pool; + int i; + + if (pic->data[0]) { + av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n"); + return -1; + } + + memset(pic->data, 0, sizeof(pic->data)); + pic->extended_data = pic->data; + + for (i = 0; i < 4 && pool->pools[i]; i++) { + pic->linesize[i] = pool->linesize[i]; + + pic->buf[i] = av_buffer_pool_get(pool->pools[i]); + if (!pic->buf[i]) + goto fail; + + pic->data[i] = pic->buf[i]->data; + } + for (; i < AV_NUM_DATA_POINTERS; i++) { + pic->data[i] = NULL; + pic->linesize[i] = 0; + } + if (pic->data[1] && !pic->data[2]) + avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt); + + if (s->debug & FF_DEBUG_BUFFERS) + av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic); + + return 0; +fail: + av_frame_unref(pic); + return AVERROR(ENOMEM); +} + +int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags) +{ + int ret; + + if (avctx->hw_frames_ctx) + return av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0); + + if ((ret = update_frame_pool(avctx, frame)) < 0) + return ret; + + switch (avctx->codec_type) { + case AVMEDIA_TYPE_VIDEO: + return video_get_buffer(avctx, frame); + case AVMEDIA_TYPE_AUDIO: + return audio_get_buffer(avctx, frame); + default: + return -1; + } +} + +int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame) +{ + AVPacket *pkt = avctx->internal->pkt; + int i; + struct { + enum AVPacketSideDataType packet; + enum AVFrameSideDataType frame; + } sd[] = { + { AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN }, + { AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX }, + { AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D }, + { AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE }, + }; + + frame->color_primaries = avctx->color_primaries; + frame->color_trc = avctx->color_trc; + frame->colorspace = avctx->colorspace; + frame->color_range = avctx->color_range; + frame->chroma_location = avctx->chroma_sample_location; + + frame->reordered_opaque = avctx->reordered_opaque; + if (!pkt) { +#if FF_API_PKT_PTS +FF_DISABLE_DEPRECATION_WARNINGS + frame->pkt_pts = AV_NOPTS_VALUE; +FF_ENABLE_DEPRECATION_WARNINGS +#endif + frame->pts = AV_NOPTS_VALUE; + return 0; + } + +#if FF_API_PKT_PTS +FF_DISABLE_DEPRECATION_WARNINGS + frame->pkt_pts = pkt->pts; +FF_ENABLE_DEPRECATION_WARNINGS +#endif + frame->pts = pkt->pts; + + for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) { + int size; + uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size); + if (packet_sd) { + AVFrameSideData *frame_sd = av_frame_new_side_data(frame, + sd[i].frame, + size); + if (!frame_sd) + return AVERROR(ENOMEM); + + memcpy(frame_sd->data, packet_sd, size); + } + } + + return 0; +} + +int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags) +{ + const AVHWAccel *hwaccel = avctx->hwaccel; + int override_dimensions = 1; + int ret; + + switch (avctx->codec_type) { + case AVMEDIA_TYPE_VIDEO: + if (frame->width <= 0 || frame->height <= 0) { + frame->width = FFMAX(avctx->width, avctx->coded_width); + frame->height = FFMAX(avctx->height, avctx->coded_height); + override_dimensions = 0; + } + if (frame->format < 0) + frame->format = avctx->pix_fmt; + if (!frame->sample_aspect_ratio.num) + frame->sample_aspect_ratio = avctx->sample_aspect_ratio; + + if (av_image_check_sar(frame->width, frame->height, + frame->sample_aspect_ratio) < 0) { + av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n", + frame->sample_aspect_ratio.num, + frame->sample_aspect_ratio.den); + frame->sample_aspect_ratio = (AVRational){ 0, 1 }; + } + + if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0) + return ret; + break; + case AVMEDIA_TYPE_AUDIO: + if (!frame->sample_rate) + frame->sample_rate = avctx->sample_rate; + if (frame->format < 0) + frame->format = avctx->sample_fmt; + if (!frame->channel_layout) { + if (avctx->channel_layout) { + if (av_get_channel_layout_nb_channels(avctx->channel_layout) != + avctx->channels) { + av_log(avctx, AV_LOG_ERROR, "Inconsistent channel " + "configuration.\n"); + return AVERROR(EINVAL); + } + + frame->channel_layout = avctx->channel_layout; + } else { + if (avctx->channels > FF_SANE_NB_CHANNELS) { + av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n", + avctx->channels); + return AVERROR(ENOSYS); + } + + frame->channel_layout = av_get_default_channel_layout(avctx->channels); + if (!frame->channel_layout) + frame->channel_layout = (1ULL << avctx->channels) - 1; + } + } + break; + default: return AVERROR(EINVAL); + } + + ret = ff_decode_frame_props(avctx, frame); + if (ret < 0) + return ret; + + if (hwaccel) { + if (hwaccel->alloc_frame) { + ret = hwaccel->alloc_frame(avctx, frame); + goto end; + } + } else + avctx->sw_pix_fmt = avctx->pix_fmt; + + ret = avctx->get_buffer2(avctx, frame, flags); + +end: + if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) { + frame->width = avctx->width; + frame->height = avctx->height; + } + + return ret; +} + +int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame) +{ + AVFrame *tmp; + int ret; + + av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO); + + if (!frame->data[0]) + return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF); + + if (av_frame_is_writable(frame)) + return ff_decode_frame_props(avctx, frame); + + tmp = av_frame_alloc(); + if (!tmp) + return AVERROR(ENOMEM); + + av_frame_move_ref(tmp, frame); + + ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF); + if (ret < 0) { + av_frame_free(&tmp); + return ret; + } + + av_frame_copy(frame, tmp); + av_frame_free(&tmp); + + return 0; +} + +void avcodec_flush_buffers(AVCodecContext *avctx) +{ + avctx->internal->draining = 0; + avctx->internal->draining_done = 0; + av_frame_unref(avctx->internal->buffer_frame); + av_packet_unref(avctx->internal->buffer_pkt); + avctx->internal->buffer_pkt_valid = 0; + + if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) + ff_thread_flush(avctx); + else if (avctx->codec->flush) + avctx->codec->flush(avctx); + + if (!avctx->refcounted_frames) + av_frame_unref(avctx->internal->to_free); +} diff --git a/libavcodec/utils.c b/libavcodec/utils.c index d8ba1d59c9..0b44bb6464 100644 --- a/libavcodec/utils.c +++ b/libavcodec/utils.c @@ -335,373 +335,6 @@ int avcodec_fill_audio_frame(AVFrame *frame, int nb_channels, return ret; } -static int update_frame_pool(AVCodecContext *avctx, AVFrame *frame) -{ - FramePool *pool = avctx->internal->pool; - int i, ret; - - switch (avctx->codec_type) { - case AVMEDIA_TYPE_VIDEO: { - uint8_t *data[4]; - int linesize[4]; - int size[4] = { 0 }; - int w = frame->width; - int h = frame->height; - int tmpsize, unaligned; - - if (pool->format == frame->format && - pool->width == frame->width && pool->height == frame->height) - return 0; - - avcodec_align_dimensions2(avctx, &w, &h, pool->stride_align); - - do { - // NOTE: do not align linesizes individually, this breaks e.g. assumptions - // that linesize[0] == 2*linesize[1] in the MPEG-encoder for 4:2:2 - av_image_fill_linesizes(linesize, avctx->pix_fmt, w); - // increase alignment of w for next try (rhs gives the lowest bit set in w) - w += w & ~(w - 1); - - unaligned = 0; - for (i = 0; i < 4; i++) - unaligned |= linesize[i] % pool->stride_align[i]; - } while (unaligned); - - tmpsize = av_image_fill_pointers(data, avctx->pix_fmt, h, - NULL, linesize); - if (tmpsize < 0) - return -1; - - for (i = 0; i < 3 && data[i + 1]; i++) - size[i] = data[i + 1] - data[i]; - size[i] = tmpsize - (data[i] - data[0]); - - for (i = 0; i < 4; i++) { - av_buffer_pool_uninit(&pool->pools[i]); - pool->linesize[i] = linesize[i]; - if (size[i]) { - pool->pools[i] = av_buffer_pool_init(size[i] + 16, NULL); - if (!pool->pools[i]) { - ret = AVERROR(ENOMEM); - goto fail; - } - } - } - pool->format = frame->format; - pool->width = frame->width; - pool->height = frame->height; - - break; - } - case AVMEDIA_TYPE_AUDIO: { - int ch = av_get_channel_layout_nb_channels(frame->channel_layout); - int planar = av_sample_fmt_is_planar(frame->format); - int planes = planar ? ch : 1; - - if (pool->format == frame->format && pool->planes == planes && - pool->channels == ch && frame->nb_samples == pool->samples) - return 0; - - av_buffer_pool_uninit(&pool->pools[0]); - ret = av_samples_get_buffer_size(&pool->linesize[0], ch, - frame->nb_samples, frame->format, 0); - if (ret < 0) - goto fail; - - pool->pools[0] = av_buffer_pool_init(pool->linesize[0], NULL); - if (!pool->pools[0]) { - ret = AVERROR(ENOMEM); - goto fail; - } - - pool->format = frame->format; - pool->planes = planes; - pool->channels = ch; - pool->samples = frame->nb_samples; - break; - } - default: av_assert0(0); - } - return 0; -fail: - for (i = 0; i < 4; i++) - av_buffer_pool_uninit(&pool->pools[i]); - pool->format = -1; - pool->planes = pool->channels = pool->samples = 0; - pool->width = pool->height = 0; - return ret; -} - -static int audio_get_buffer(AVCodecContext *avctx, AVFrame *frame) -{ - FramePool *pool = avctx->internal->pool; - int planes = pool->planes; - int i; - - frame->linesize[0] = pool->linesize[0]; - - if (planes > AV_NUM_DATA_POINTERS) { - frame->extended_data = av_mallocz(planes * sizeof(*frame->extended_data)); - frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS; - frame->extended_buf = av_mallocz(frame->nb_extended_buf * - sizeof(*frame->extended_buf)); - if (!frame->extended_data || !frame->extended_buf) { - av_freep(&frame->extended_data); - av_freep(&frame->extended_buf); - return AVERROR(ENOMEM); - } - } else - frame->extended_data = frame->data; - - for (i = 0; i < FFMIN(planes, AV_NUM_DATA_POINTERS); i++) { - frame->buf[i] = av_buffer_pool_get(pool->pools[0]); - if (!frame->buf[i]) - goto fail; - frame->extended_data[i] = frame->data[i] = frame->buf[i]->data; - } - for (i = 0; i < frame->nb_extended_buf; i++) { - frame->extended_buf[i] = av_buffer_pool_get(pool->pools[0]); - if (!frame->extended_buf[i]) - goto fail; - frame->extended_data[i + AV_NUM_DATA_POINTERS] = frame->extended_buf[i]->data; - } - - if (avctx->debug & FF_DEBUG_BUFFERS) - av_log(avctx, AV_LOG_DEBUG, "default_get_buffer called on frame %p", frame); - - return 0; -fail: - av_frame_unref(frame); - return AVERROR(ENOMEM); -} - -static int video_get_buffer(AVCodecContext *s, AVFrame *pic) -{ - FramePool *pool = s->internal->pool; - int i; - - if (pic->data[0]) { - av_log(s, AV_LOG_ERROR, "pic->data[0]!=NULL in avcodec_default_get_buffer\n"); - return -1; - } - - memset(pic->data, 0, sizeof(pic->data)); - pic->extended_data = pic->data; - - for (i = 0; i < 4 && pool->pools[i]; i++) { - pic->linesize[i] = pool->linesize[i]; - - pic->buf[i] = av_buffer_pool_get(pool->pools[i]); - if (!pic->buf[i]) - goto fail; - - pic->data[i] = pic->buf[i]->data; - } - for (; i < AV_NUM_DATA_POINTERS; i++) { - pic->data[i] = NULL; - pic->linesize[i] = 0; - } - if (pic->data[1] && !pic->data[2]) - avpriv_set_systematic_pal2((uint32_t *)pic->data[1], s->pix_fmt); - - if (s->debug & FF_DEBUG_BUFFERS) - av_log(s, AV_LOG_DEBUG, "default_get_buffer called on pic %p\n", pic); - - return 0; -fail: - av_frame_unref(pic); - return AVERROR(ENOMEM); -} - -int avcodec_default_get_buffer2(AVCodecContext *avctx, AVFrame *frame, int flags) -{ - int ret; - - if (avctx->hw_frames_ctx) - return av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0); - - if ((ret = update_frame_pool(avctx, frame)) < 0) - return ret; - - switch (avctx->codec_type) { - case AVMEDIA_TYPE_VIDEO: - return video_get_buffer(avctx, frame); - case AVMEDIA_TYPE_AUDIO: - return audio_get_buffer(avctx, frame); - default: - return -1; - } -} - -int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame) -{ - AVPacket *pkt = avctx->internal->pkt; - int i; - struct { - enum AVPacketSideDataType packet; - enum AVFrameSideDataType frame; - } sd[] = { - { AV_PKT_DATA_REPLAYGAIN , AV_FRAME_DATA_REPLAYGAIN }, - { AV_PKT_DATA_DISPLAYMATRIX, AV_FRAME_DATA_DISPLAYMATRIX }, - { AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D }, - { AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE }, - }; - - frame->color_primaries = avctx->color_primaries; - frame->color_trc = avctx->color_trc; - frame->colorspace = avctx->colorspace; - frame->color_range = avctx->color_range; - frame->chroma_location = avctx->chroma_sample_location; - - frame->reordered_opaque = avctx->reordered_opaque; - if (!pkt) { -#if FF_API_PKT_PTS -FF_DISABLE_DEPRECATION_WARNINGS - frame->pkt_pts = AV_NOPTS_VALUE; -FF_ENABLE_DEPRECATION_WARNINGS -#endif - frame->pts = AV_NOPTS_VALUE; - return 0; - } - -#if FF_API_PKT_PTS -FF_DISABLE_DEPRECATION_WARNINGS - frame->pkt_pts = pkt->pts; -FF_ENABLE_DEPRECATION_WARNINGS -#endif - frame->pts = pkt->pts; - - for (i = 0; i < FF_ARRAY_ELEMS(sd); i++) { - int size; - uint8_t *packet_sd = av_packet_get_side_data(pkt, sd[i].packet, &size); - if (packet_sd) { - AVFrameSideData *frame_sd = av_frame_new_side_data(frame, - sd[i].frame, - size); - if (!frame_sd) - return AVERROR(ENOMEM); - - memcpy(frame_sd->data, packet_sd, size); - } - } - - return 0; -} - -int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags) -{ - const AVHWAccel *hwaccel = avctx->hwaccel; - int override_dimensions = 1; - int ret; - - switch (avctx->codec_type) { - case AVMEDIA_TYPE_VIDEO: - if (frame->width <= 0 || frame->height <= 0) { - frame->width = FFMAX(avctx->width, avctx->coded_width); - frame->height = FFMAX(avctx->height, avctx->coded_height); - override_dimensions = 0; - } - if (frame->format < 0) - frame->format = avctx->pix_fmt; - if (!frame->sample_aspect_ratio.num) - frame->sample_aspect_ratio = avctx->sample_aspect_ratio; - - if (av_image_check_sar(frame->width, frame->height, - frame->sample_aspect_ratio) < 0) { - av_log(avctx, AV_LOG_WARNING, "ignoring invalid SAR: %u/%u\n", - frame->sample_aspect_ratio.num, - frame->sample_aspect_ratio.den); - frame->sample_aspect_ratio = (AVRational){ 0, 1 }; - } - - if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0) - return ret; - break; - case AVMEDIA_TYPE_AUDIO: - if (!frame->sample_rate) - frame->sample_rate = avctx->sample_rate; - if (frame->format < 0) - frame->format = avctx->sample_fmt; - if (!frame->channel_layout) { - if (avctx->channel_layout) { - if (av_get_channel_layout_nb_channels(avctx->channel_layout) != - avctx->channels) { - av_log(avctx, AV_LOG_ERROR, "Inconsistent channel " - "configuration.\n"); - return AVERROR(EINVAL); - } - - frame->channel_layout = avctx->channel_layout; - } else { - if (avctx->channels > FF_SANE_NB_CHANNELS) { - av_log(avctx, AV_LOG_ERROR, "Too many channels: %d.\n", - avctx->channels); - return AVERROR(ENOSYS); - } - - frame->channel_layout = av_get_default_channel_layout(avctx->channels); - if (!frame->channel_layout) - frame->channel_layout = (1ULL << avctx->channels) - 1; - } - } - break; - default: return AVERROR(EINVAL); - } - - ret = ff_decode_frame_props(avctx, frame); - if (ret < 0) - return ret; - - if (hwaccel) { - if (hwaccel->alloc_frame) { - ret = hwaccel->alloc_frame(avctx, frame); - goto end; - } - } else - avctx->sw_pix_fmt = avctx->pix_fmt; - - ret = avctx->get_buffer2(avctx, frame, flags); - -end: - if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions) { - frame->width = avctx->width; - frame->height = avctx->height; - } - - return ret; -} - -int ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame) -{ - AVFrame *tmp; - int ret; - - av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO); - - if (!frame->data[0]) - return ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF); - - if (av_frame_is_writable(frame)) - return ff_decode_frame_props(avctx, frame); - - tmp = av_frame_alloc(); - if (!tmp) - return AVERROR(ENOMEM); - - av_frame_move_ref(tmp, frame); - - ret = ff_get_buffer(avctx, frame, AV_GET_BUFFER_FLAG_REF); - if (ret < 0) { - av_frame_free(&tmp); - return ret; - } - - av_frame_copy(frame, tmp); - av_frame_free(&tmp); - - return 0; -} - int avcodec_default_execute(AVCodecContext *c, int (*func)(AVCodecContext *c2, void *arg2), void *arg, int *ret, int count, int size) { int i; @@ -726,129 +359,6 @@ int avcodec_default_execute2(AVCodecContext *c, int (*func)(AVCodecContext *c2, return 0; } -static int is_hwaccel_pix_fmt(enum AVPixelFormat pix_fmt) -{ - const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt); - return desc->flags & AV_PIX_FMT_FLAG_HWACCEL; -} - -enum AVPixelFormat avcodec_default_get_format(struct AVCodecContext *s, const enum AVPixelFormat *fmt) -{ - while (*fmt != AV_PIX_FMT_NONE && is_hwaccel_pix_fmt(*fmt)) - ++fmt; - return fmt[0]; -} - -static AVHWAccel *find_hwaccel(enum AVCodecID codec_id, - enum AVPixelFormat pix_fmt) -{ - AVHWAccel *hwaccel = NULL; - - while ((hwaccel = av_hwaccel_next(hwaccel))) - if (hwaccel->id == codec_id - && hwaccel->pix_fmt == pix_fmt) - return hwaccel; - return NULL; -} - -static int setup_hwaccel(AVCodecContext *avctx, - const enum AVPixelFormat fmt, - const char *name) -{ - AVHWAccel *hwa = find_hwaccel(avctx->codec_id, fmt); - int ret = 0; - - if (!hwa) { - av_log(avctx, AV_LOG_ERROR, - "Could not find an AVHWAccel for the pixel format: %s", - name); - return AVERROR(ENOENT); - } - - if (hwa->priv_data_size) { - avctx->internal->hwaccel_priv_data = av_mallocz(hwa->priv_data_size); - if (!avctx->internal->hwaccel_priv_data) - return AVERROR(ENOMEM); - } - - if (hwa->init) { - ret = hwa->init(avctx); - if (ret < 0) { - av_freep(&avctx->internal->hwaccel_priv_data); - return ret; - } - } - - avctx->hwaccel = hwa; - - return 0; -} - -int ff_get_format(AVCodecContext *avctx, const enum AVPixelFormat *fmt) -{ - const AVPixFmtDescriptor *desc; - enum AVPixelFormat *choices; - enum AVPixelFormat ret; - unsigned n = 0; - - while (fmt[n] != AV_PIX_FMT_NONE) - ++n; - - av_assert0(n >= 1); - avctx->sw_pix_fmt = fmt[n - 1]; - av_assert2(!is_hwaccel_pix_fmt(avctx->sw_pix_fmt)); - - choices = av_malloc_array(n + 1, sizeof(*choices)); - if (!choices) - return AV_PIX_FMT_NONE; - - memcpy(choices, fmt, (n + 1) * sizeof(*choices)); - - for (;;) { - if (avctx->hwaccel && avctx->hwaccel->uninit) - avctx->hwaccel->uninit(avctx); - av_freep(&avctx->internal->hwaccel_priv_data); - avctx->hwaccel = NULL; - - av_buffer_unref(&avctx->hw_frames_ctx); - - ret = avctx->get_format(avctx, choices); - - desc = av_pix_fmt_desc_get(ret); - if (!desc) { - ret = AV_PIX_FMT_NONE; - break; - } - - if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL)) - break; - - if (avctx->hw_frames_ctx) { - AVHWFramesContext *hw_frames_ctx = (AVHWFramesContext*)avctx->hw_frames_ctx->data; - if (hw_frames_ctx->format != ret) { - av_log(avctx, AV_LOG_ERROR, "Format returned from get_buffer() " - "does not match the format of provided AVHWFramesContext\n"); - ret = AV_PIX_FMT_NONE; - break; - } - } - - if (!setup_hwaccel(avctx, ret, desc->name)) - break; - - /* Remove failed hwaccel from choices */ - for (n = 0; choices[n] != ret; n++) - av_assert0(choices[n] != AV_PIX_FMT_NONE); - - do - choices[n] = choices[n + 1]; - while (choices[n++] != AV_PIX_FMT_NONE); - } - - av_freep(&choices); - return ret; -} - int attribute_align_arg avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options) { int ret = 0; @@ -1210,244 +720,6 @@ FF_ENABLE_DEPRECATION_WARNINGS goto end; } -static int apply_param_change(AVCodecContext *avctx, AVPacket *avpkt) -{ - int size = 0, ret; - const uint8_t *data; - uint32_t flags; - - data = av_packet_get_side_data(avpkt, AV_PKT_DATA_PARAM_CHANGE, &size); - if (!data) - return 0; - - if (!(avctx->codec->capabilities & AV_CODEC_CAP_PARAM_CHANGE)) { - av_log(avctx, AV_LOG_ERROR, "This decoder does not support parameter " - "changes, but PARAM_CHANGE side data was sent to it.\n"); - ret = AVERROR(EINVAL); - goto fail2; - } - - if (size < 4) - goto fail; - - flags = bytestream_get_le32(&data); - size -= 4; - - if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_COUNT) { - if (size < 4) - goto fail; - avctx->channels = bytestream_get_le32(&data); - size -= 4; - } - if (flags & AV_SIDE_DATA_PARAM_CHANGE_CHANNEL_LAYOUT) { - if (size < 8) - goto fail; - avctx->channel_layout = bytestream_get_le64(&data); - size -= 8; - } - if (flags & AV_SIDE_DATA_PARAM_CHANGE_SAMPLE_RATE) { - if (size < 4) - goto fail; - avctx->sample_rate = bytestream_get_le32(&data); - size -= 4; - } - if (flags & AV_SIDE_DATA_PARAM_CHANGE_DIMENSIONS) { - if (size < 8) - goto fail; - avctx->width = bytestream_get_le32(&data); - avctx->height = bytestream_get_le32(&data); - size -= 8; - ret = ff_set_dimensions(avctx, avctx->width, avctx->height); - if (ret < 0) - goto fail2; - } - - return 0; -fail: - av_log(avctx, AV_LOG_ERROR, "PARAM_CHANGE side data too small.\n"); - ret = AVERROR_INVALIDDATA; -fail2: - if (ret < 0) { - av_log(avctx, AV_LOG_ERROR, "Error applying parameter changes.\n"); - if (avctx->err_recognition & AV_EF_EXPLODE) - return ret; - } - return 0; -} - -static int unrefcount_frame(AVCodecInternal *avci, AVFrame *frame) -{ - int ret; - - /* move the original frame to our backup */ - av_frame_unref(avci->to_free); - av_frame_move_ref(avci->to_free, frame); - - /* now copy everything except the AVBufferRefs back - * note that we make a COPY of the side data, so calling av_frame_free() on - * the caller's frame will work properly */ - ret = av_frame_copy_props(frame, avci->to_free); - if (ret < 0) - return ret; - - memcpy(frame->data, avci->to_free->data, sizeof(frame->data)); - memcpy(frame->linesize, avci->to_free->linesize, sizeof(frame->linesize)); - if (avci->to_free->extended_data != avci->to_free->data) { - int planes = av_get_channel_layout_nb_channels(avci->to_free->channel_layout); - int size = planes * sizeof(*frame->extended_data); - - if (!size) { - av_frame_unref(frame); - return AVERROR_BUG; - } - - frame->extended_data = av_malloc(size); - if (!frame->extended_data) { - av_frame_unref(frame); - return AVERROR(ENOMEM); - } - memcpy(frame->extended_data, avci->to_free->extended_data, - size); - } else - frame->extended_data = frame->data; - - frame->format = avci->to_free->format; - frame->width = avci->to_free->width; - frame->height = avci->to_free->height; - frame->channel_layout = avci->to_free->channel_layout; - frame->nb_samples = avci->to_free->nb_samples; - - return 0; -} - -int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture, - int *got_picture_ptr, - AVPacket *avpkt) -{ - AVCodecInternal *avci = avctx->internal; - int ret; - - *got_picture_ptr = 0; - if ((avctx->coded_width || avctx->coded_height) && av_image_check_size(avctx->coded_width, avctx->coded_height, 0, avctx)) - return -1; - - if (!avctx->codec->decode) { - av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n"); - return AVERROR(ENOSYS); - } - - avctx->internal->pkt = avpkt; - ret = apply_param_change(avctx, avpkt); - if (ret < 0) - return ret; - - av_frame_unref(picture); - - if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size || - (avctx->active_thread_type & FF_THREAD_FRAME)) { - if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) - ret = ff_thread_decode_frame(avctx, picture, got_picture_ptr, - avpkt); - else { - ret = avctx->codec->decode(avctx, picture, got_picture_ptr, - avpkt); - if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS)) - picture->pkt_dts = avpkt->dts; - /* get_buffer is supposed to set frame parameters */ - if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) { - picture->sample_aspect_ratio = avctx->sample_aspect_ratio; - picture->width = avctx->width; - picture->height = avctx->height; - picture->format = avctx->pix_fmt; - } - } - - emms_c(); //needed to avoid an emms_c() call before every return; - - if (*got_picture_ptr) { - if (!avctx->refcounted_frames) { - int err = unrefcount_frame(avci, picture); - if (err < 0) - return err; - } - - avctx->frame_number++; - } else - av_frame_unref(picture); - } else - ret = 0; - -#if FF_API_AVCTX_TIMEBASE - if (avctx->framerate.num > 0 && avctx->framerate.den > 0) - avctx->time_base = av_inv_q(avctx->framerate); -#endif - - return ret; -} - -int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx, - AVFrame *frame, - int *got_frame_ptr, - AVPacket *avpkt) -{ - AVCodecInternal *avci = avctx->internal; - int ret = 0; - - *got_frame_ptr = 0; - - if (!avctx->codec->decode) { - av_log(avctx, AV_LOG_ERROR, "This decoder requires using the avcodec_send_packet() API.\n"); - return AVERROR(ENOSYS); - } - - avctx->internal->pkt = avpkt; - - if (!avpkt->data && avpkt->size) { - av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n"); - return AVERROR(EINVAL); - } - - ret = apply_param_change(avctx, avpkt); - if (ret < 0) - return ret; - - av_frame_unref(frame); - - if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) { - ret = avctx->codec->decode(avctx, frame, got_frame_ptr, avpkt); - if (ret >= 0 && *got_frame_ptr) { - avctx->frame_number++; - frame->pkt_dts = avpkt->dts; - if (frame->format == AV_SAMPLE_FMT_NONE) - frame->format = avctx->sample_fmt; - - if (!avctx->refcounted_frames) { - int err = unrefcount_frame(avci, frame); - if (err < 0) - return err; - } - } else - av_frame_unref(frame); - } - - - return ret; -} - -int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub, - int *got_sub_ptr, - AVPacket *avpkt) -{ - int ret; - - avctx->internal->pkt = avpkt; - *got_sub_ptr = 0; - ret = avctx->codec->decode(avctx, sub, got_sub_ptr, avpkt); - if (*got_sub_ptr) - avctx->frame_number++; - return ret; -} - void avsubtitle_free(AVSubtitle *sub) { int i; @@ -1467,150 +739,6 @@ void avsubtitle_free(AVSubtitle *sub) memset(sub, 0, sizeof(AVSubtitle)); } -static int do_decode(AVCodecContext *avctx, AVPacket *pkt) -{ - int got_frame; - int ret; - - av_assert0(!avctx->internal->buffer_frame->buf[0]); - - if (!pkt) - pkt = avctx->internal->buffer_pkt; - - // This is the lesser evil. The field is for compatibility with legacy users - // of the legacy API, and users using the new API should not be forced to - // even know about this field. - avctx->refcounted_frames = 1; - - // Some codecs (at least wma lossless) will crash when feeding drain packets - // after EOF was signaled. - if (avctx->internal->draining_done) - return AVERROR_EOF; - - if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) { - ret = avcodec_decode_video2(avctx, avctx->internal->buffer_frame, - &got_frame, pkt); - if (ret >= 0) - ret = pkt->size; - } else if (avctx->codec_type == AVMEDIA_TYPE_AUDIO) { - ret = avcodec_decode_audio4(avctx, avctx->internal->buffer_frame, - &got_frame, pkt); - } else { - ret = AVERROR(EINVAL); - } - - if (ret < 0) - return ret; - - if (avctx->internal->draining && !got_frame) - avctx->internal->draining_done = 1; - - if (ret >= pkt->size) { - av_packet_unref(avctx->internal->buffer_pkt); - } else { - int consumed = ret; - - if (pkt != avctx->internal->buffer_pkt) { - av_packet_unref(avctx->internal->buffer_pkt); - if ((ret = av_packet_ref(avctx->internal->buffer_pkt, pkt)) < 0) - return ret; - } - - avctx->internal->buffer_pkt->data += consumed; - avctx->internal->buffer_pkt->size -= consumed; - avctx->internal->buffer_pkt->pts = AV_NOPTS_VALUE; - avctx->internal->buffer_pkt->dts = AV_NOPTS_VALUE; - } - - if (got_frame) - av_assert0(avctx->internal->buffer_frame->buf[0]); - - return 0; -} - -int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt) -{ - int ret; - - if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec)) - return AVERROR(EINVAL); - - if (avctx->internal->draining) - return AVERROR_EOF; - - if (!avpkt || !avpkt->size) { - avctx->internal->draining = 1; - avpkt = NULL; - - if (!(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) - return 0; - } - - if (avctx->codec->send_packet) { - if (avpkt) { - ret = apply_param_change(avctx, (AVPacket *)avpkt); - if (ret < 0) - return ret; - } - return avctx->codec->send_packet(avctx, avpkt); - } - - // Emulation via old API. Assume avpkt is likely not refcounted, while - // decoder output is always refcounted, and avoid copying. - - if (avctx->internal->buffer_pkt->size || avctx->internal->buffer_frame->buf[0]) - return AVERROR(EAGAIN); - - // The goal is decoding the first frame of the packet without using memcpy, - // because the common case is having only 1 frame per packet (especially - // with video, but audio too). In other cases, it can't be avoided, unless - // the user is feeding refcounted packets. - return do_decode(avctx, (AVPacket *)avpkt); -} - -int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame) -{ - int ret; - - av_frame_unref(frame); - - if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec)) - return AVERROR(EINVAL); - - if (avctx->codec->receive_frame) { - if (avctx->internal->draining && !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY)) - return AVERROR_EOF; - return avctx->codec->receive_frame(avctx, frame); - } - - // Emulation via old API. - - if (!avctx->internal->buffer_frame->buf[0]) { - if (!avctx->internal->buffer_pkt->size && !avctx->internal->draining) - return AVERROR(EAGAIN); - - while (1) { - if ((ret = do_decode(avctx, avctx->internal->buffer_pkt)) < 0) { - av_packet_unref(avctx->internal->buffer_pkt); - return ret; - } - // Some audio decoders may consume partial data without returning - // a frame (fate-wmapro-2ch). There is no way to make the caller - // call avcodec_receive_frame() again without returning a frame, - // so try to decode more in these cases. - if (avctx->internal->buffer_frame->buf[0] || - !avctx->internal->buffer_pkt->size) - break; - } - } - - if (!avctx->internal->buffer_frame->buf[0]) - return avctx->internal->draining ? AVERROR_EOF : AVERROR(EAGAIN); - - av_frame_move_ref(frame, avctx->internal->buffer_frame); - return 0; -} - av_cold int avcodec_close(AVCodecContext *avctx) { int i; @@ -1953,23 +1081,6 @@ const char *avcodec_license(void) return LICENSE_PREFIX LIBAV_LICENSE + sizeof(LICENSE_PREFIX) - 1; } -void avcodec_flush_buffers(AVCodecContext *avctx) -{ - avctx->internal->draining = 0; - avctx->internal->draining_done = 0; - av_frame_unref(avctx->internal->buffer_frame); - av_packet_unref(avctx->internal->buffer_pkt); - avctx->internal->buffer_pkt_valid = 0; - - if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) - ff_thread_flush(avctx); - else if (avctx->codec->flush) - avctx->codec->flush(avctx); - - if (!avctx->refcounted_frames) - av_frame_unref(avctx->internal->to_free); -} - int av_get_exact_bits_per_sample(enum AVCodecID codec_id) { switch (codec_id) {