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-rw-r--r--media/ffvpx/libavcodec/decode.c1761
1 files changed, 1761 insertions, 0 deletions
diff --git a/media/ffvpx/libavcodec/decode.c b/media/ffvpx/libavcodec/decode.c
new file mode 100644
index 0000000000..fb1824be1c
--- /dev/null
+++ b/media/ffvpx/libavcodec/decode.c
@@ -0,0 +1,1761 @@
+/*
+ * generic decoding-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 <stdint.h>
+#include <string.h>
+
+#include "config.h"
+
+#if CONFIG_ICONV
+# include <iconv.h>
+#endif
+
+#include "libavutil/avassert.h"
+#include "libavutil/avstring.h"
+#include "libavutil/bprint.h"
+#include "libavutil/common.h"
+#include "libavutil/frame.h"
+#include "libavutil/hwcontext.h"
+#include "libavutil/imgutils.h"
+#include "libavutil/internal.h"
+#include "libavutil/intmath.h"
+
+#include "avcodec.h"
+#include "bytestream.h"
+#include "decode.h"
+#include "internal.h"
+#include "thread.h"
+
+static int apply_param_change(AVCodecContext *avctx, const AVPacket *avpkt)
+{
+ int size = 0, ret;
+ const uint8_t *data;
+ uint32_t flags;
+ int64_t val;
+
+ 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;
+ val = bytestream_get_le32(&data);
+ if (val <= 0 || val > INT_MAX) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid channel count");
+ ret = AVERROR_INVALIDDATA;
+ goto fail2;
+ }
+ avctx->channels = val;
+ 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;
+ val = bytestream_get_le32(&data);
+ if (val <= 0 || val > INT_MAX) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid sample rate");
+ ret = AVERROR_INVALIDDATA;
+ goto fail2;
+ }
+ avctx->sample_rate = val;
+ 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 extract_packet_props(AVCodecInternal *avci, const AVPacket *pkt)
+{
+ int ret = 0;
+
+ av_packet_unref(avci->last_pkt_props);
+ if (pkt) {
+ ret = av_packet_copy_props(avci->last_pkt_props, pkt);
+ if (!ret)
+ avci->last_pkt_props->size = pkt->size; // HACK: Needed for ff_init_buffer_info().
+ }
+ return ret;
+}
+
+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 = avci->to_free->channels;
+ 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;
+ frame->channels = avci->to_free->channels;
+
+ return 0;
+}
+
+static int bsfs_init(AVCodecContext *avctx)
+{
+ AVCodecInternal *avci = avctx->internal;
+ DecodeFilterContext *s = &avci->filter;
+ const char *bsfs_str;
+ int ret;
+
+ if (s->nb_bsfs)
+ return 0;
+
+ bsfs_str = avctx->codec->bsfs ? avctx->codec->bsfs : "null";
+ while (bsfs_str && *bsfs_str) {
+ AVBSFContext **tmp;
+ const AVBitStreamFilter *filter;
+ char *bsf;
+
+ bsf = av_get_token(&bsfs_str, ",");
+ if (!bsf) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+
+ filter = av_bsf_get_by_name(bsf);
+ if (!filter) {
+ av_log(avctx, AV_LOG_ERROR, "A non-existing bitstream filter %s "
+ "requested by a decoder. This is a bug, please report it.\n",
+ bsf);
+ ret = AVERROR_BUG;
+ av_freep(&bsf);
+ goto fail;
+ }
+ av_freep(&bsf);
+
+ tmp = av_realloc_array(s->bsfs, s->nb_bsfs + 1, sizeof(*s->bsfs));
+ if (!tmp) {
+ ret = AVERROR(ENOMEM);
+ goto fail;
+ }
+ s->bsfs = tmp;
+ s->nb_bsfs++;
+
+ ret = av_bsf_alloc(filter, &s->bsfs[s->nb_bsfs - 1]);
+ if (ret < 0)
+ goto fail;
+
+ if (s->nb_bsfs == 1) {
+ /* We do not currently have an API for passing the input timebase into decoders,
+ * but no filters used here should actually need it.
+ * So we make up some plausible-looking number (the MPEG 90kHz timebase) */
+ s->bsfs[s->nb_bsfs - 1]->time_base_in = (AVRational){ 1, 90000 };
+ ret = avcodec_parameters_from_context(s->bsfs[s->nb_bsfs - 1]->par_in,
+ avctx);
+ } else {
+ s->bsfs[s->nb_bsfs - 1]->time_base_in = s->bsfs[s->nb_bsfs - 2]->time_base_out;
+ ret = avcodec_parameters_copy(s->bsfs[s->nb_bsfs - 1]->par_in,
+ s->bsfs[s->nb_bsfs - 2]->par_out);
+ }
+ if (ret < 0)
+ goto fail;
+
+ ret = av_bsf_init(s->bsfs[s->nb_bsfs - 1]);
+ if (ret < 0)
+ goto fail;
+ }
+
+ return 0;
+fail:
+ ff_decode_bsfs_uninit(avctx);
+ return ret;
+}
+
+/* try to get one output packet from the filter chain */
+static int bsfs_poll(AVCodecContext *avctx, AVPacket *pkt)
+{
+ DecodeFilterContext *s = &avctx->internal->filter;
+ int idx, ret;
+
+ /* start with the last filter in the chain */
+ idx = s->nb_bsfs - 1;
+ while (idx >= 0) {
+ /* request a packet from the currently selected filter */
+ ret = av_bsf_receive_packet(s->bsfs[idx], pkt);
+ if (ret == AVERROR(EAGAIN)) {
+ /* no packets available, try the next filter up the chain */
+ ret = 0;
+ idx--;
+ continue;
+ } else if (ret < 0 && ret != AVERROR_EOF) {
+ return ret;
+ }
+
+ /* got a packet or EOF -- pass it to the caller or to the next filter
+ * down the chain */
+ if (idx == s->nb_bsfs - 1) {
+ return ret;
+ } else {
+ idx++;
+ ret = av_bsf_send_packet(s->bsfs[idx], ret < 0 ? NULL : pkt);
+ if (ret < 0) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Error pre-processing a packet before decoding\n");
+ av_packet_unref(pkt);
+ return ret;
+ }
+ }
+ }
+
+ return AVERROR(EAGAIN);
+}
+
+int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt)
+{
+ AVCodecInternal *avci = avctx->internal;
+ int ret;
+
+ if (avci->draining)
+ return AVERROR_EOF;
+
+ ret = bsfs_poll(avctx, pkt);
+ if (ret == AVERROR_EOF)
+ avci->draining = 1;
+ if (ret < 0)
+ return ret;
+
+ ret = extract_packet_props(avctx->internal, pkt);
+ if (ret < 0)
+ goto finish;
+
+ ret = apply_param_change(avctx, pkt);
+ if (ret < 0)
+ goto finish;
+
+ if (avctx->codec->receive_frame)
+ avci->compat_decode_consumed += pkt->size;
+
+ return 0;
+finish:
+ av_packet_unref(pkt);
+ return ret;
+}
+
+/**
+ * Attempt to guess proper monotonic timestamps for decoded video frames
+ * which might have incorrect times. Input timestamps may wrap around, in
+ * which case the output will as well.
+ *
+ * @param pts the pts field of the decoded AVPacket, as passed through
+ * AVFrame.pts
+ * @param dts the dts field of the decoded AVPacket
+ * @return one of the input values, may be AV_NOPTS_VALUE
+ */
+static int64_t guess_correct_pts(AVCodecContext *ctx,
+ int64_t reordered_pts, int64_t dts)
+{
+ int64_t pts = AV_NOPTS_VALUE;
+
+ if (dts != AV_NOPTS_VALUE) {
+ ctx->pts_correction_num_faulty_dts += dts <= ctx->pts_correction_last_dts;
+ ctx->pts_correction_last_dts = dts;
+ } else if (reordered_pts != AV_NOPTS_VALUE)
+ ctx->pts_correction_last_dts = reordered_pts;
+
+ if (reordered_pts != AV_NOPTS_VALUE) {
+ ctx->pts_correction_num_faulty_pts += reordered_pts <= ctx->pts_correction_last_pts;
+ ctx->pts_correction_last_pts = reordered_pts;
+ } else if(dts != AV_NOPTS_VALUE)
+ ctx->pts_correction_last_pts = dts;
+
+ if ((ctx->pts_correction_num_faulty_pts<=ctx->pts_correction_num_faulty_dts || dts == AV_NOPTS_VALUE)
+ && reordered_pts != AV_NOPTS_VALUE)
+ pts = reordered_pts;
+ else
+ pts = dts;
+
+ return pts;
+}
+
+/*
+ * The core of the receive_frame_wrapper for the decoders implementing
+ * the simple API. Certain decoders might consume partial packets without
+ * returning any output, so this function needs to be called in a loop until it
+ * returns EAGAIN.
+ **/
+static int decode_simple_internal(AVCodecContext *avctx, AVFrame *frame)
+{
+ AVCodecInternal *avci = avctx->internal;
+ DecodeSimpleContext *ds = &avci->ds;
+ AVPacket *pkt = ds->in_pkt;
+ // copy to ensure we do not change pkt
+ AVPacket tmp;
+ int got_frame, actual_got_frame, did_split;
+ int ret;
+
+ if (!pkt->data && !avci->draining) {
+ av_packet_unref(pkt);
+ ret = ff_decode_get_packet(avctx, pkt);
+ if (ret < 0 && ret != AVERROR_EOF)
+ return ret;
+ }
+
+ // Some codecs (at least wma lossless) will crash when feeding drain packets
+ // after EOF was signaled.
+ if (avci->draining_done)
+ return AVERROR_EOF;
+
+ if (!pkt->data &&
+ !(avctx->codec->capabilities & AV_CODEC_CAP_DELAY ||
+ avctx->active_thread_type & FF_THREAD_FRAME))
+ return AVERROR_EOF;
+
+ tmp = *pkt;
+#if FF_API_MERGE_SD
+FF_DISABLE_DEPRECATION_WARNINGS
+ did_split = avci->compat_decode_partial_size ?
+ ff_packet_split_and_drop_side_data(&tmp) :
+ av_packet_split_side_data(&tmp);
+
+ if (did_split) {
+ ret = extract_packet_props(avctx->internal, &tmp);
+ if (ret < 0)
+ return ret;
+
+ ret = apply_param_change(avctx, &tmp);
+ if (ret < 0)
+ return ret;
+ }
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+
+ got_frame = 0;
+
+ if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME) {
+ ret = ff_thread_decode_frame(avctx, frame, &got_frame, &tmp);
+ } else {
+ ret = avctx->codec->decode(avctx, frame, &got_frame, &tmp);
+
+ if (!(avctx->codec->caps_internal & FF_CODEC_CAP_SETS_PKT_DTS))
+ frame->pkt_dts = pkt->dts;
+ if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
+ if(!avctx->has_b_frames)
+ frame->pkt_pos = pkt->pos;
+ //FIXME these should be under if(!avctx->has_b_frames)
+ /* get_buffer is supposed to set frame parameters */
+ if (!(avctx->codec->capabilities & AV_CODEC_CAP_DR1)) {
+ if (!frame->sample_aspect_ratio.num) frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
+ if (!frame->width) frame->width = avctx->width;
+ if (!frame->height) frame->height = avctx->height;
+ if (frame->format == AV_PIX_FMT_NONE) frame->format = avctx->pix_fmt;
+ }
+ }
+ }
+ emms_c();
+ actual_got_frame = got_frame;
+
+ if (avctx->codec->type == AVMEDIA_TYPE_VIDEO) {
+ if (frame->flags & AV_FRAME_FLAG_DISCARD)
+ got_frame = 0;
+ if (got_frame)
+ frame->best_effort_timestamp = guess_correct_pts(avctx,
+ frame->pts,
+ frame->pkt_dts);
+ } else if (avctx->codec->type == AVMEDIA_TYPE_AUDIO) {
+ uint8_t *side;
+ int side_size;
+ uint32_t discard_padding = 0;
+ uint8_t skip_reason = 0;
+ uint8_t discard_reason = 0;
+
+ if (ret >= 0 && got_frame) {
+ frame->best_effort_timestamp = guess_correct_pts(avctx,
+ frame->pts,
+ frame->pkt_dts);
+ if (frame->format == AV_SAMPLE_FMT_NONE)
+ frame->format = avctx->sample_fmt;
+ if (!frame->channel_layout)
+ frame->channel_layout = avctx->channel_layout;
+ if (!frame->channels)
+ frame->channels = avctx->channels;
+ if (!frame->sample_rate)
+ frame->sample_rate = avctx->sample_rate;
+ }
+
+ side= av_packet_get_side_data(avci->last_pkt_props, AV_PKT_DATA_SKIP_SAMPLES, &side_size);
+ if(side && side_size>=10) {
+ avctx->internal->skip_samples = AV_RL32(side) * avctx->internal->skip_samples_multiplier;
+ discard_padding = AV_RL32(side + 4);
+ av_log(avctx, AV_LOG_DEBUG, "skip %d / discard %d samples due to side data\n",
+ avctx->internal->skip_samples, (int)discard_padding);
+ skip_reason = AV_RL8(side + 8);
+ discard_reason = AV_RL8(side + 9);
+ }
+
+ if ((frame->flags & AV_FRAME_FLAG_DISCARD) && got_frame &&
+ !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
+ avctx->internal->skip_samples = FFMAX(0, avctx->internal->skip_samples - frame->nb_samples);
+ got_frame = 0;
+ }
+
+ if (avctx->internal->skip_samples > 0 && got_frame &&
+ !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
+ if(frame->nb_samples <= avctx->internal->skip_samples){
+ got_frame = 0;
+ avctx->internal->skip_samples -= frame->nb_samples;
+ av_log(avctx, AV_LOG_DEBUG, "skip whole frame, skip left: %d\n",
+ avctx->internal->skip_samples);
+ } else {
+ av_samples_copy(frame->extended_data, frame->extended_data, 0, avctx->internal->skip_samples,
+ frame->nb_samples - avctx->internal->skip_samples, avctx->channels, frame->format);
+ if(avctx->pkt_timebase.num && avctx->sample_rate) {
+ int64_t diff_ts = av_rescale_q(avctx->internal->skip_samples,
+ (AVRational){1, avctx->sample_rate},
+ avctx->pkt_timebase);
+ if(frame->pts!=AV_NOPTS_VALUE)
+ frame->pts += diff_ts;
+#if FF_API_PKT_PTS
+FF_DISABLE_DEPRECATION_WARNINGS
+ if(frame->pkt_pts!=AV_NOPTS_VALUE)
+ frame->pkt_pts += diff_ts;
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+ if(frame->pkt_dts!=AV_NOPTS_VALUE)
+ frame->pkt_dts += diff_ts;
+ if (frame->pkt_duration >= diff_ts)
+ frame->pkt_duration -= diff_ts;
+ } else {
+ av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for skipped samples.\n");
+ }
+ av_log(avctx, AV_LOG_DEBUG, "skip %d/%d samples\n",
+ avctx->internal->skip_samples, frame->nb_samples);
+ frame->nb_samples -= avctx->internal->skip_samples;
+ avctx->internal->skip_samples = 0;
+ }
+ }
+
+ if (discard_padding > 0 && discard_padding <= frame->nb_samples && got_frame &&
+ !(avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL)) {
+ if (discard_padding == frame->nb_samples) {
+ got_frame = 0;
+ } else {
+ if(avctx->pkt_timebase.num && avctx->sample_rate) {
+ int64_t diff_ts = av_rescale_q(frame->nb_samples - discard_padding,
+ (AVRational){1, avctx->sample_rate},
+ avctx->pkt_timebase);
+ frame->pkt_duration = diff_ts;
+ } else {
+ av_log(avctx, AV_LOG_WARNING, "Could not update timestamps for discarded samples.\n");
+ }
+ av_log(avctx, AV_LOG_DEBUG, "discard %d/%d samples\n",
+ (int)discard_padding, frame->nb_samples);
+ frame->nb_samples -= discard_padding;
+ }
+ }
+
+ if ((avctx->flags2 & AV_CODEC_FLAG2_SKIP_MANUAL) && got_frame) {
+ AVFrameSideData *fside = av_frame_new_side_data(frame, AV_FRAME_DATA_SKIP_SAMPLES, 10);
+ if (fside) {
+ AV_WL32(fside->data, avctx->internal->skip_samples);
+ AV_WL32(fside->data + 4, discard_padding);
+ AV_WL8(fside->data + 8, skip_reason);
+ AV_WL8(fside->data + 9, discard_reason);
+ avctx->internal->skip_samples = 0;
+ }
+ }
+ }
+#if FF_API_MERGE_SD
+ if (did_split) {
+ av_packet_free_side_data(&tmp);
+ if(ret == tmp.size)
+ ret = pkt->size;
+ }
+#endif
+
+ if (avctx->codec->type == AVMEDIA_TYPE_AUDIO &&
+ !avci->showed_multi_packet_warning &&
+ ret >= 0 && ret != pkt->size && !(avctx->codec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
+ av_log(avctx, AV_LOG_WARNING, "Multiple frames in a packet.\n");
+ avci->showed_multi_packet_warning = 1;
+ }
+
+ if (!got_frame)
+ av_frame_unref(frame);
+
+ if (ret >= 0 && avctx->codec->type == AVMEDIA_TYPE_VIDEO && !(avctx->flags & AV_CODEC_FLAG_TRUNCATED))
+ ret = pkt->size;
+
+#if FF_API_AVCTX_TIMEBASE
+ if (avctx->framerate.num > 0 && avctx->framerate.den > 0)
+ avctx->time_base = av_inv_q(av_mul_q(avctx->framerate, (AVRational){avctx->ticks_per_frame, 1}));
+#endif
+
+ /* do not stop draining when actual_got_frame != 0 or ret < 0 */
+ /* got_frame == 0 but actual_got_frame != 0 when frame is discarded */
+ if (avctx->internal->draining && !actual_got_frame) {
+ if (ret < 0) {
+ /* prevent infinite loop if a decoder wrongly always return error on draining */
+ /* reasonable nb_errors_max = maximum b frames + thread count */
+ int nb_errors_max = 20 + (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME ?
+ avctx->thread_count : 1);
+
+ if (avci->nb_draining_errors++ >= nb_errors_max) {
+ av_log(avctx, AV_LOG_ERROR, "Too many errors when draining, this is a bug. "
+ "Stop draining and force EOF.\n");
+ avci->draining_done = 1;
+ ret = AVERROR_BUG;
+ }
+ } else {
+ avci->draining_done = 1;
+ }
+ }
+
+ avci->compat_decode_consumed += ret;
+
+ if (ret >= pkt->size || ret < 0) {
+ av_packet_unref(pkt);
+ } else {
+ int consumed = ret;
+
+ pkt->data += consumed;
+ pkt->size -= consumed;
+ avci->last_pkt_props->size -= consumed; // See extract_packet_props() comment.
+ pkt->pts = AV_NOPTS_VALUE;
+ pkt->dts = AV_NOPTS_VALUE;
+ avci->last_pkt_props->pts = AV_NOPTS_VALUE;
+ avci->last_pkt_props->dts = AV_NOPTS_VALUE;
+ }
+
+ if (got_frame)
+ av_assert0(frame->buf[0]);
+
+ return ret < 0 ? ret : 0;
+}
+
+static int decode_simple_receive_frame(AVCodecContext *avctx, AVFrame *frame)
+{
+ int ret;
+
+ while (!frame->buf[0]) {
+ ret = decode_simple_internal(avctx, frame);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int decode_receive_frame_internal(AVCodecContext *avctx, AVFrame *frame)
+{
+ AVCodecInternal *avci = avctx->internal;
+ int ret;
+
+ av_assert0(!frame->buf[0]);
+
+ if (avctx->codec->receive_frame)
+ ret = avctx->codec->receive_frame(avctx, frame);
+ else
+ ret = decode_simple_receive_frame(avctx, frame);
+
+ if (ret == AVERROR_EOF)
+ avci->draining_done = 1;
+
+ return ret;
+}
+
+int attribute_align_arg avcodec_send_packet(AVCodecContext *avctx, const AVPacket *avpkt)
+{
+ AVCodecInternal *avci = avctx->internal;
+ 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 && avpkt->data)
+ return AVERROR(EINVAL);
+
+ ret = bsfs_init(avctx);
+ if (ret < 0)
+ return ret;
+
+ av_packet_unref(avci->buffer_pkt);
+ if (avpkt && (avpkt->data || avpkt->side_data_elems)) {
+ ret = av_packet_ref(avci->buffer_pkt, avpkt);
+ if (ret < 0)
+ return ret;
+ }
+
+ ret = av_bsf_send_packet(avci->filter.bsfs[0], avci->buffer_pkt);
+ if (ret < 0) {
+ av_packet_unref(avci->buffer_pkt);
+ return ret;
+ }
+
+ if (!avci->buffer_frame->buf[0]) {
+ ret = decode_receive_frame_internal(avctx, avci->buffer_frame);
+ if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int apply_cropping(AVCodecContext *avctx, AVFrame *frame)
+{
+ /* make sure we are noisy about decoders returning invalid cropping data */
+ if (frame->crop_left >= INT_MAX - frame->crop_right ||
+ frame->crop_top >= INT_MAX - frame->crop_bottom ||
+ (frame->crop_left + frame->crop_right) >= frame->width ||
+ (frame->crop_top + frame->crop_bottom) >= frame->height) {
+ av_log(avctx, AV_LOG_WARNING,
+ "Invalid cropping information set by a decoder: "
+ "%"SIZE_SPECIFIER"/%"SIZE_SPECIFIER"/%"SIZE_SPECIFIER"/%"SIZE_SPECIFIER" "
+ "(frame size %dx%d). This is a bug, please report it\n",
+ frame->crop_left, frame->crop_right, frame->crop_top, frame->crop_bottom,
+ frame->width, frame->height);
+ frame->crop_left = 0;
+ frame->crop_right = 0;
+ frame->crop_top = 0;
+ frame->crop_bottom = 0;
+ return 0;
+ }
+
+ if (!avctx->apply_cropping)
+ return 0;
+
+ return av_frame_apply_cropping(frame, avctx->flags & AV_CODEC_FLAG_UNALIGNED ?
+ AV_FRAME_CROP_UNALIGNED : 0);
+}
+
+int attribute_align_arg avcodec_receive_frame(AVCodecContext *avctx, AVFrame *frame)
+{
+ AVCodecInternal *avci = avctx->internal;
+ int ret;
+
+ av_frame_unref(frame);
+
+ if (!avcodec_is_open(avctx) || !av_codec_is_decoder(avctx->codec))
+ return AVERROR(EINVAL);
+
+ ret = bsfs_init(avctx);
+ if (ret < 0)
+ return ret;
+
+ if (avci->buffer_frame->buf[0]) {
+ av_frame_move_ref(frame, avci->buffer_frame);
+ } else {
+ ret = decode_receive_frame_internal(avctx, frame);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
+ ret = apply_cropping(avctx, frame);
+ if (ret < 0) {
+ av_frame_unref(frame);
+ return ret;
+ }
+ }
+
+ avctx->frame_number++;
+
+ return 0;
+}
+
+static int compat_decode(AVCodecContext *avctx, AVFrame *frame,
+ int *got_frame, const AVPacket *pkt)
+{
+ AVCodecInternal *avci = avctx->internal;
+ int ret = 0;
+
+ av_assert0(avci->compat_decode_consumed == 0);
+
+ if (avci->draining_done && pkt && pkt->size != 0) {
+ av_log(avctx, AV_LOG_WARNING, "Got unexpected packet after EOF\n");
+ avcodec_flush_buffers(avctx);
+ }
+
+ *got_frame = 0;
+ avci->compat_decode = 1;
+
+ if (avci->compat_decode_partial_size > 0 &&
+ avci->compat_decode_partial_size != pkt->size) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Got unexpected packet size after a partial decode\n");
+ ret = AVERROR(EINVAL);
+ goto finish;
+ }
+
+ if (!avci->compat_decode_partial_size) {
+ ret = avcodec_send_packet(avctx, pkt);
+ if (ret == AVERROR_EOF)
+ ret = 0;
+ else if (ret == AVERROR(EAGAIN)) {
+ /* we fully drain all the output in each decode call, so this should not
+ * ever happen */
+ ret = AVERROR_BUG;
+ goto finish;
+ } else if (ret < 0)
+ goto finish;
+ }
+
+ while (ret >= 0) {
+ ret = avcodec_receive_frame(avctx, frame);
+ if (ret < 0) {
+ if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
+ ret = 0;
+ goto finish;
+ }
+
+ if (frame != avci->compat_decode_frame) {
+ if (!avctx->refcounted_frames) {
+ ret = unrefcount_frame(avci, frame);
+ if (ret < 0)
+ goto finish;
+ }
+
+ *got_frame = 1;
+ frame = avci->compat_decode_frame;
+ } else {
+ if (!avci->compat_decode_warned) {
+ av_log(avctx, AV_LOG_WARNING, "The deprecated avcodec_decode_* "
+ "API cannot return all the frames for this decoder. "
+ "Some frames will be dropped. Update your code to the "
+ "new decoding API to fix this.\n");
+ avci->compat_decode_warned = 1;
+ }
+ }
+
+ if (avci->draining || (!avctx->codec->bsfs && avci->compat_decode_consumed < pkt->size))
+ break;
+ }
+
+finish:
+ if (ret == 0) {
+ /* if there are any bsfs then assume full packet is always consumed */
+ if (avctx->codec->bsfs)
+ ret = pkt->size;
+ else
+ ret = FFMIN(avci->compat_decode_consumed, pkt->size);
+ }
+ avci->compat_decode_consumed = 0;
+ avci->compat_decode_partial_size = (ret >= 0) ? pkt->size - ret : 0;
+
+ return ret;
+}
+
+int attribute_align_arg avcodec_decode_video2(AVCodecContext *avctx, AVFrame *picture,
+ int *got_picture_ptr,
+ const AVPacket *avpkt)
+{
+ return compat_decode(avctx, picture, got_picture_ptr, avpkt);
+}
+
+int attribute_align_arg avcodec_decode_audio4(AVCodecContext *avctx,
+ AVFrame *frame,
+ int *got_frame_ptr,
+ const AVPacket *avpkt)
+{
+ return compat_decode(avctx, frame, got_frame_ptr, avpkt);
+}
+
+static void get_subtitle_defaults(AVSubtitle *sub)
+{
+ memset(sub, 0, sizeof(*sub));
+ sub->pts = AV_NOPTS_VALUE;
+}
+
+#define UTF8_MAX_BYTES 4 /* 5 and 6 bytes sequences should not be used */
+static int recode_subtitle(AVCodecContext *avctx,
+ AVPacket *outpkt, const AVPacket *inpkt)
+{
+#if CONFIG_ICONV
+ iconv_t cd = (iconv_t)-1;
+ int ret = 0;
+ char *inb, *outb;
+ size_t inl, outl;
+ AVPacket tmp;
+#endif
+
+ if (avctx->sub_charenc_mode != FF_SUB_CHARENC_MODE_PRE_DECODER || inpkt->size == 0)
+ return 0;
+
+#if CONFIG_ICONV
+ cd = iconv_open("UTF-8", avctx->sub_charenc);
+ av_assert0(cd != (iconv_t)-1);
+
+ inb = inpkt->data;
+ inl = inpkt->size;
+
+ if (inl >= INT_MAX / UTF8_MAX_BYTES - AV_INPUT_BUFFER_PADDING_SIZE) {
+ av_log(avctx, AV_LOG_ERROR, "Subtitles packet is too big for recoding\n");
+ ret = AVERROR(ENOMEM);
+ goto end;
+ }
+
+ ret = av_new_packet(&tmp, inl * UTF8_MAX_BYTES);
+ if (ret < 0)
+ goto end;
+ outpkt->buf = tmp.buf;
+ outpkt->data = tmp.data;
+ outpkt->size = tmp.size;
+ outb = outpkt->data;
+ outl = outpkt->size;
+
+ if (iconv(cd, &inb, &inl, &outb, &outl) == (size_t)-1 ||
+ iconv(cd, NULL, NULL, &outb, &outl) == (size_t)-1 ||
+ outl >= outpkt->size || inl != 0) {
+ ret = FFMIN(AVERROR(errno), -1);
+ av_log(avctx, AV_LOG_ERROR, "Unable to recode subtitle event \"%s\" "
+ "from %s to UTF-8\n", inpkt->data, avctx->sub_charenc);
+ av_packet_unref(&tmp);
+ goto end;
+ }
+ outpkt->size -= outl;
+ memset(outpkt->data + outpkt->size, 0, outl);
+
+end:
+ if (cd != (iconv_t)-1)
+ iconv_close(cd);
+ return ret;
+#else
+ av_log(avctx, AV_LOG_ERROR, "requesting subtitles recoding without iconv");
+ return AVERROR(EINVAL);
+#endif
+}
+
+static int utf8_check(const uint8_t *str)
+{
+ const uint8_t *byte;
+ uint32_t codepoint, min;
+
+ while (*str) {
+ byte = str;
+ GET_UTF8(codepoint, *(byte++), return 0;);
+ min = byte - str == 1 ? 0 : byte - str == 2 ? 0x80 :
+ 1 << (5 * (byte - str) - 4);
+ if (codepoint < min || codepoint >= 0x110000 ||
+ codepoint == 0xFFFE /* BOM */ ||
+ codepoint >= 0xD800 && codepoint <= 0xDFFF /* surrogates */)
+ return 0;
+ str = byte;
+ }
+ return 1;
+}
+
+#if FF_API_ASS_TIMING
+static void insert_ts(AVBPrint *buf, int ts)
+{
+ if (ts == -1) {
+ av_bprintf(buf, "9:59:59.99,");
+ } else {
+ int h, m, s;
+
+ h = ts/360000; ts -= 360000*h;
+ m = ts/ 6000; ts -= 6000*m;
+ s = ts/ 100; ts -= 100*s;
+ av_bprintf(buf, "%d:%02d:%02d.%02d,", h, m, s, ts);
+ }
+}
+
+static int convert_sub_to_old_ass_form(AVSubtitle *sub, const AVPacket *pkt, AVRational tb)
+{
+ int i;
+ AVBPrint buf;
+
+ av_bprint_init(&buf, 0, AV_BPRINT_SIZE_UNLIMITED);
+
+ for (i = 0; i < sub->num_rects; i++) {
+ char *final_dialog;
+ const char *dialog;
+ AVSubtitleRect *rect = sub->rects[i];
+ int ts_start, ts_duration = -1;
+ long int layer;
+
+ if (rect->type != SUBTITLE_ASS || !strncmp(rect->ass, "Dialogue: ", 10))
+ continue;
+
+ av_bprint_clear(&buf);
+
+ /* skip ReadOrder */
+ dialog = strchr(rect->ass, ',');
+ if (!dialog)
+ continue;
+ dialog++;
+
+ /* extract Layer or Marked */
+ layer = strtol(dialog, (char**)&dialog, 10);
+ if (*dialog != ',')
+ continue;
+ dialog++;
+
+ /* rescale timing to ASS time base (ms) */
+ ts_start = av_rescale_q(pkt->pts, tb, av_make_q(1, 100));
+ if (pkt->duration != -1)
+ ts_duration = av_rescale_q(pkt->duration, tb, av_make_q(1, 100));
+ sub->end_display_time = FFMAX(sub->end_display_time, 10 * ts_duration);
+
+ /* construct ASS (standalone file form with timestamps) string */
+ av_bprintf(&buf, "Dialogue: %ld,", layer);
+ insert_ts(&buf, ts_start);
+ insert_ts(&buf, ts_duration == -1 ? -1 : ts_start + ts_duration);
+ av_bprintf(&buf, "%s\r\n", dialog);
+
+ final_dialog = av_strdup(buf.str);
+ if (!av_bprint_is_complete(&buf) || !final_dialog) {
+ av_freep(&final_dialog);
+ av_bprint_finalize(&buf, NULL);
+ return AVERROR(ENOMEM);
+ }
+ av_freep(&rect->ass);
+ rect->ass = final_dialog;
+ }
+
+ av_bprint_finalize(&buf, NULL);
+ return 0;
+}
+#endif
+
+int avcodec_decode_subtitle2(AVCodecContext *avctx, AVSubtitle *sub,
+ int *got_sub_ptr,
+ AVPacket *avpkt)
+{
+ int i, ret = 0;
+ AVCodecInternal *avci = avctx->internal;
+
+ if (!avpkt->data && avpkt->size) {
+ av_log(avctx, AV_LOG_ERROR, "invalid packet: NULL data, size != 0\n");
+ return AVERROR(EINVAL);
+ }
+ if (!avctx->codec)
+ return AVERROR(EINVAL);
+ if (avctx->codec->type != AVMEDIA_TYPE_SUBTITLE) {
+ av_log(avctx, AV_LOG_ERROR, "Invalid media type for subtitles\n");
+ return AVERROR(EINVAL);
+ }
+
+ *got_sub_ptr = 0;
+ get_subtitle_defaults(sub);
+
+ if ((avctx->codec->capabilities & AV_CODEC_CAP_DELAY) || avpkt->size) {
+ AVPacket pkt_recoded;
+ AVPacket tmp = *avpkt;
+#if FF_API_MERGE_SD
+FF_DISABLE_DEPRECATION_WARNINGS
+ int did_split = avci->compat_decode_partial_size ?
+ ff_packet_split_and_drop_side_data(&tmp) :
+ av_packet_split_side_data(&tmp);
+ //apply_param_change(avctx, &tmp);
+
+ if (did_split) {
+ /* FFMIN() prevents overflow in case the packet wasn't allocated with
+ * proper padding.
+ * If the side data is smaller than the buffer padding size, the
+ * remaining bytes should have already been filled with zeros by the
+ * original packet allocation anyway. */
+ memset(tmp.data + tmp.size, 0,
+ FFMIN(avpkt->size - tmp.size, AV_INPUT_BUFFER_PADDING_SIZE));
+ }
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+
+ pkt_recoded = tmp;
+ ret = recode_subtitle(avctx, &pkt_recoded, &tmp);
+ if (ret < 0) {
+ *got_sub_ptr = 0;
+ } else {
+ ret = extract_packet_props(avctx->internal, &pkt_recoded);
+ if (ret < 0)
+ return ret;
+
+ if (avctx->pkt_timebase.num && avpkt->pts != AV_NOPTS_VALUE)
+ sub->pts = av_rescale_q(avpkt->pts,
+ avctx->pkt_timebase, AV_TIME_BASE_Q);
+ ret = avctx->codec->decode(avctx, sub, got_sub_ptr, &pkt_recoded);
+ av_assert1((ret >= 0) >= !!*got_sub_ptr &&
+ !!*got_sub_ptr >= !!sub->num_rects);
+
+#if FF_API_ASS_TIMING
+ if (avctx->sub_text_format == FF_SUB_TEXT_FMT_ASS_WITH_TIMINGS
+ && *got_sub_ptr && sub->num_rects) {
+ const AVRational tb = avctx->pkt_timebase.num ? avctx->pkt_timebase
+ : avctx->time_base;
+ int err = convert_sub_to_old_ass_form(sub, avpkt, tb);
+ if (err < 0)
+ ret = err;
+ }
+#endif
+
+ if (sub->num_rects && !sub->end_display_time && avpkt->duration &&
+ avctx->pkt_timebase.num) {
+ AVRational ms = { 1, 1000 };
+ sub->end_display_time = av_rescale_q(avpkt->duration,
+ avctx->pkt_timebase, ms);
+ }
+
+ if (avctx->codec_descriptor->props & AV_CODEC_PROP_BITMAP_SUB)
+ sub->format = 0;
+ else if (avctx->codec_descriptor->props & AV_CODEC_PROP_TEXT_SUB)
+ sub->format = 1;
+
+ for (i = 0; i < sub->num_rects; i++) {
+ if (sub->rects[i]->ass && !utf8_check(sub->rects[i]->ass)) {
+ av_log(avctx, AV_LOG_ERROR,
+ "Invalid UTF-8 in decoded subtitles text; "
+ "maybe missing -sub_charenc option\n");
+ avsubtitle_free(sub);
+ ret = AVERROR_INVALIDDATA;
+ break;
+ }
+ }
+
+ if (tmp.data != pkt_recoded.data) { // did we recode?
+ /* prevent from destroying side data from original packet */
+ pkt_recoded.side_data = NULL;
+ pkt_recoded.side_data_elems = 0;
+
+ av_packet_unref(&pkt_recoded);
+ }
+ }
+
+#if FF_API_MERGE_SD
+ if (did_split) {
+ av_packet_free_side_data(&tmp);
+ if(ret == tmp.size)
+ ret = avpkt->size;
+ }
+#endif
+
+ 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->capabilities & AV_HWACCEL_CODEC_CAP_EXPERIMENTAL &&
+ avctx->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
+ av_log(avctx, AV_LOG_WARNING, "Ignoring experimental hwaccel: %s\n",
+ hwa->name);
+ return AVERROR_PATCHWELCOME;
+ }
+
+ 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);
+ }
+
+ avctx->hwaccel = hwa;
+ if (hwa->init) {
+ ret = hwa->init(avctx);
+ if (ret < 0) {
+ av_freep(&avctx->internal->hwaccel_priv_data);
+ avctx->hwaccel = NULL;
+ return ret;
+ }
+ }
+
+ 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 FF_API_CAP_VDPAU
+ if (avctx->codec->capabilities&AV_CODEC_CAP_HWACCEL_VDPAU)
+ break;
+#endif
+
+ 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
+ ret = av_image_fill_linesizes(linesize, avctx->pix_fmt, w);
+ if (ret < 0)
+ return ret;
+ // 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 + STRIDE_ALIGN - 1,
+ CONFIG_MEMORY_POISONING ?
+ NULL :
+ av_buffer_allocz);
+ 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 = frame->channels; //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_array(planes, sizeof(*frame->extended_data));
+ frame->nb_extended_buf = planes - AV_NUM_DATA_POINTERS;
+ frame->extended_buf = av_mallocz_array(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;
+ av_assert0(frame->nb_extended_buf == 0);
+ }
+
+ 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;
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pic->format);
+ int i;
+
+ if (pic->data[0] || pic->data[1] || pic->data[2] || pic->data[3]) {
+ av_log(s, AV_LOG_ERROR, "pic->data[*]!=NULL in avcodec_default_get_buffer\n");
+ return -1;
+ }
+
+ if (!desc) {
+ av_log(s, AV_LOG_ERROR,
+ "Unable to get pixel format descriptor for format %s\n",
+ av_get_pix_fmt_name(pic->format));
+ return AVERROR(EINVAL);
+ }
+
+ 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 (desc->flags & AV_PIX_FMT_FLAG_PAL ||
+ desc->flags & AV_PIX_FMT_FLAG_PSEUDOPAL)
+ avpriv_set_systematic_pal2((uint32_t *)pic->data[1], pic->format);
+
+ 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) {
+ ret = av_hwframe_get_buffer(avctx->hw_frames_ctx, frame, 0);
+ frame->width = avctx->coded_width;
+ frame->height = avctx->coded_height;
+ return ret;
+ }
+
+ 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;
+ }
+}
+
+static int add_metadata_from_side_data(const AVPacket *avpkt, AVFrame *frame)
+{
+ int size;
+ const uint8_t *side_metadata;
+
+ AVDictionary **frame_md = &frame->metadata;
+
+ side_metadata = av_packet_get_side_data(avpkt,
+ AV_PKT_DATA_STRINGS_METADATA, &size);
+ return av_packet_unpack_dictionary(side_metadata, size, frame_md);
+}
+
+int ff_init_buffer_info(AVCodecContext *avctx, AVFrame *frame)
+{
+ const AVPacket *pkt = avctx->internal->last_pkt_props;
+ int i;
+ static const 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_SPHERICAL, AV_FRAME_DATA_SPHERICAL },
+ { AV_PKT_DATA_STEREO3D, AV_FRAME_DATA_STEREO3D },
+ { AV_PKT_DATA_AUDIO_SERVICE_TYPE, AV_FRAME_DATA_AUDIO_SERVICE_TYPE },
+ { AV_PKT_DATA_MASTERING_DISPLAY_METADATA, AV_FRAME_DATA_MASTERING_DISPLAY_METADATA },
+ { AV_PKT_DATA_CONTENT_LIGHT_LEVEL, AV_FRAME_DATA_CONTENT_LIGHT_LEVEL },
+ { AV_PKT_DATA_A53_CC, AV_FRAME_DATA_A53_CC },
+ };
+
+ if (pkt) {
+ frame->pts = pkt->pts;
+#if FF_API_PKT_PTS
+FF_DISABLE_DEPRECATION_WARNINGS
+ frame->pkt_pts = pkt->pts;
+FF_ENABLE_DEPRECATION_WARNINGS
+#endif
+ frame->pkt_pos = pkt->pos;
+ frame->pkt_duration = pkt->duration;
+ frame->pkt_size = pkt->size;
+
+ 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);
+ }
+ }
+ add_metadata_from_side_data(pkt, frame);
+
+ if (pkt->flags & AV_PKT_FLAG_DISCARD) {
+ frame->flags |= AV_FRAME_FLAG_DISCARD;
+ } else {
+ frame->flags = (frame->flags & ~AV_FRAME_FLAG_DISCARD);
+ }
+ }
+ frame->reordered_opaque = avctx->reordered_opaque;
+
+ if (frame->color_primaries == AVCOL_PRI_UNSPECIFIED)
+ frame->color_primaries = avctx->color_primaries;
+ if (frame->color_trc == AVCOL_TRC_UNSPECIFIED)
+ frame->color_trc = avctx->color_trc;
+ if (frame->colorspace == AVCOL_SPC_UNSPECIFIED)
+ frame->colorspace = avctx->colorspace;
+ if (frame->color_range == AVCOL_RANGE_UNSPECIFIED)
+ frame->color_range = avctx->color_range;
+ if (frame->chroma_location == AVCHROMA_LOC_UNSPECIFIED)
+ frame->chroma_location = avctx->chroma_sample_location;
+
+ switch (avctx->codec->type) {
+ case AVMEDIA_TYPE_VIDEO:
+ frame->format = avctx->pix_fmt;
+ if (!frame->sample_aspect_ratio.num)
+ frame->sample_aspect_ratio = avctx->sample_aspect_ratio;
+
+ if (frame->width && frame->height &&
+ 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 };
+ }
+
+ 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->channels = avctx->channels;
+ break;
+ }
+ return 0;
+}
+
+int ff_decode_frame_props(AVCodecContext *avctx, AVFrame *frame)
+{
+ return ff_init_buffer_info(avctx, frame);
+}
+
+static void validate_avframe_allocation(AVCodecContext *avctx, AVFrame *frame)
+{
+ if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
+ int i;
+ int num_planes = av_pix_fmt_count_planes(frame->format);
+ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(frame->format);
+ int flags = desc ? desc->flags : 0;
+ if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PAL))
+ num_planes = 2;
+ for (i = 0; i < num_planes; i++) {
+ av_assert0(frame->data[i]);
+ }
+ // For now do not enforce anything for palette of pseudopal formats
+ if (num_planes == 1 && (flags & AV_PIX_FMT_FLAG_PSEUDOPAL))
+ num_planes = 2;
+ // For formats without data like hwaccel allow unused pointers to be non-NULL.
+ for (i = num_planes; num_planes > 0 && i < FF_ARRAY_ELEMS(frame->data); i++) {
+ if (frame->data[i])
+ av_log(avctx, AV_LOG_ERROR, "Buffer returned by get_buffer2() did not zero unused plane pointers\n");
+ frame->data[i] = NULL;
+ }
+ }
+}
+
+static int get_buffer_internal(AVCodecContext *avctx, AVFrame *frame, int flags)
+{
+ const AVHWAccel *hwaccel = avctx->hwaccel;
+ int override_dimensions = 1;
+ int ret;
+
+ if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
+ if ((ret = av_image_check_size2(avctx->width, avctx->height, avctx->max_pixels, AV_PIX_FMT_NONE, 0, avctx)) < 0 || avctx->pix_fmt<0) {
+ av_log(avctx, AV_LOG_ERROR, "video_get_buffer: image parameters invalid\n");
+ return AVERROR(EINVAL);
+ }
+
+ if (frame->width <= 0 || frame->height <= 0) {
+ frame->width = FFMAX(avctx->width, AV_CEIL_RSHIFT(avctx->coded_width, avctx->lowres));
+ frame->height = FFMAX(avctx->height, AV_CEIL_RSHIFT(avctx->coded_height, avctx->lowres));
+ override_dimensions = 0;
+ }
+
+ if (frame->data[0] || frame->data[1] || frame->data[2] || frame->data[3]) {
+ av_log(avctx, AV_LOG_ERROR, "pic->data[*]!=NULL in get_buffer_internal\n");
+ 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);
+ if (ret >= 0)
+ validate_avframe_allocation(avctx, frame);
+
+end:
+ if (avctx->codec_type == AVMEDIA_TYPE_VIDEO && !override_dimensions &&
+ !(avctx->codec->caps_internal & FF_CODEC_CAP_EXPORTS_CROPPING)) {
+ frame->width = avctx->width;
+ frame->height = avctx->height;
+ }
+
+ return ret;
+}
+
+int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
+{
+ int ret = get_buffer_internal(avctx, frame, flags);
+ if (ret < 0) {
+ av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
+ frame->width = frame->height = 0;
+ }
+ return ret;
+}
+
+static int reget_buffer_internal(AVCodecContext *avctx, AVFrame *frame)
+{
+ AVFrame *tmp;
+ int ret;
+
+ av_assert0(avctx->codec_type == AVMEDIA_TYPE_VIDEO);
+
+ if (frame->data[0] && (frame->width != avctx->width || frame->height != avctx->height || frame->format != avctx->pix_fmt)) {
+ av_log(avctx, AV_LOG_WARNING, "Picture changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s in reget buffer()\n",
+ frame->width, frame->height, av_get_pix_fmt_name(frame->format), avctx->width, avctx->height, av_get_pix_fmt_name(avctx->pix_fmt));
+ av_frame_unref(frame);
+ }
+
+ ff_init_buffer_info(avctx, frame);
+
+ 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 ff_reget_buffer(AVCodecContext *avctx, AVFrame *frame)
+{
+ int ret = reget_buffer_internal(avctx, frame);
+ if (ret < 0)
+ av_log(avctx, AV_LOG_ERROR, "reget_buffer() failed\n");
+ return ret;
+}
+
+void avcodec_flush_buffers(AVCodecContext *avctx)
+{
+ avctx->internal->draining = 0;
+ avctx->internal->draining_done = 0;
+ avctx->internal->nb_draining_errors = 0;
+ av_frame_unref(avctx->internal->buffer_frame);
+ av_frame_unref(avctx->internal->compat_decode_frame);
+ av_packet_unref(avctx->internal->buffer_pkt);
+ avctx->internal->buffer_pkt_valid = 0;
+
+ av_packet_unref(avctx->internal->ds.in_pkt);
+
+ if (HAVE_THREADS && avctx->active_thread_type & FF_THREAD_FRAME)
+ ff_thread_flush(avctx);
+ else if (avctx->codec->flush)
+ avctx->codec->flush(avctx);
+
+ avctx->pts_correction_last_pts =
+ avctx->pts_correction_last_dts = INT64_MIN;
+
+ ff_decode_bsfs_uninit(avctx);
+
+ if (!avctx->refcounted_frames)
+ av_frame_unref(avctx->internal->to_free);
+}
+
+void ff_decode_bsfs_uninit(AVCodecContext *avctx)
+{
+ DecodeFilterContext *s = &avctx->internal->filter;
+ int i;
+
+ for (i = 0; i < s->nb_bsfs; i++)
+ av_bsf_free(&s->bsfs[i]);
+ av_freep(&s->bsfs);
+ s->nb_bsfs = 0;
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-10 08:11:59 +0000