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lavc/mediacodecdec_h264: use ff_h264_decode_extradata to extract PPS/SPS

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Fixes playback of HLS streams on MediaTek devices which requires PPS/SPS
to be set in their respective csd-{0,1} buffers.
This commit is contained in:
Matthieu Bouron 2016-06-10 13:16:09 +02:00
parent 72ed8d8bd2
commit 0cd5e281df
1 changed files with 35 additions and 111 deletions
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146
libavcodec/mediacodecdec_h264.c
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@ -32,6 +32,7 @@
#include "libavutil/atomic.h"
#include "avcodec.h"
#include "h264.h"
#include "internal.h"
#include "mediacodecdec.h"
#include "mediacodec_wrapper.h"
@ -50,104 +51,6 @@ typedef struct MediaCodecH264DecContext {
} MediaCodecH264DecContext;
static int h264_extradata_to_annexb_sps_pps(AVCodecContext *avctx,
uint8_t **extradata_annexb, int *extradata_annexb_size,
int *sps_offset, int *sps_size,
int *pps_offset, int *pps_size)
{
uint16_t unit_size;
uint64_t total_size = 0;
uint8_t i, j, unit_nb;
uint8_t sps_seen = 0;
uint8_t pps_seen = 0;
const uint8_t *extradata;
static const uint8_t nalu_header[4] = { 0x00, 0x00, 0x00, 0x01 };
if (avctx->extradata_size < 8) {
av_log(avctx, AV_LOG_ERROR,
"Too small extradata size, corrupted stream or invalid MP4/AVCC bitstream\n");
return AVERROR(EINVAL);
}
*extradata_annexb = NULL;
*extradata_annexb_size = 0;
*sps_offset = *sps_size = 0;
*pps_offset = *pps_size = 0;
extradata = avctx->extradata + 4;
/* skip length size */
extradata++;
for (j = 0; j < 2; j ++) {
if (j == 0) {
/* number of sps unit(s) */
unit_nb = *extradata++ & 0x1f;
} else {
/* number of pps unit(s) */
unit_nb = *extradata++;
}
for (i = 0; i < unit_nb; i++) {
int err;
unit_size = AV_RB16(extradata);
total_size += unit_size + 4;
if (total_size > INT_MAX) {
av_log(avctx, AV_LOG_ERROR,
"Too big extradata size, corrupted stream or invalid MP4/AVCC bitstream\n");
av_freep(extradata_annexb);
return AVERROR(EINVAL);
}
if (extradata + 2 + unit_size > avctx->extradata + avctx->extradata_size) {
av_log(avctx, AV_LOG_ERROR, "Packet header is not contained in global extradata, "
"corrupted stream or invalid MP4/AVCC bitstream\n");
av_freep(extradata_annexb);
return AVERROR(EINVAL);
}
if ((err = av_reallocp(extradata_annexb, total_size)) < 0) {
return err;
}
memcpy(*extradata_annexb + total_size - unit_size - 4, nalu_header, 4);
memcpy(*extradata_annexb + total_size - unit_size, extradata + 2, unit_size);
extradata += 2 + unit_size;
}
if (unit_nb) {
if (j == 0) {
sps_seen = 1;
*sps_size = total_size;
} else {
pps_seen = 1;
*pps_size = total_size - *sps_size;
*pps_offset = *sps_size;
}
}
}
*extradata_annexb_size = total_size;
if (!sps_seen)
av_log(avctx, AV_LOG_WARNING,
"Warning: SPS NALU missing or invalid. "
"The resulting stream may not play.\n");
if (!pps_seen)
av_log(avctx, AV_LOG_WARNING,
"Warning: PPS NALU missing or invalid. "
"The resulting stream may not play.\n");
return 0;
}
static av_cold int mediacodec_decode_close(AVCodecContext *avctx)
{
MediaCodecH264DecContext *s = avctx->priv_data;
@ -164,10 +67,20 @@ static av_cold int mediacodec_decode_close(AVCodecContext *avctx)
static av_cold int mediacodec_decode_init(AVCodecContext *avctx)
{
int i;
int ret;
H264ParamSets ps;
const PPS *pps = NULL;
const SPS *sps = NULL;
int is_avc = 0;
int nal_length_size = 0;
FFAMediaFormat *format = NULL;
MediaCodecH264DecContext *s = avctx->priv_data;
memset(&ps, 0, sizeof(ps));
format = ff_AMediaFormat_new();
if (!format) {
av_log(avctx, AV_LOG_ERROR, "Failed to create media format\n");
@ -179,24 +92,32 @@ static av_cold int mediacodec_decode_init(AVCodecContext *avctx)
ff_AMediaFormat_setInt32(format, "width", avctx->width);
ff_AMediaFormat_setInt32(format, "height", avctx->height);
if (avctx->extradata[0] == 1) {
uint8_t *extradata = NULL;
int extradata_size = 0;
int sps_offset, sps_size;
int pps_offset, pps_size;
if ((ret = h264_extradata_to_annexb_sps_pps(avctx, &extradata, &extradata_size,
&sps_offset, &sps_size, &pps_offset, &pps_size)) < 0) {
ret = ff_h264_decode_extradata(avctx->extradata, avctx->extradata_size,
&ps, &is_avc, &nal_length_size, 0, avctx);
if (ret < 0) {
goto done;
}
ff_AMediaFormat_setBuffer(format, "csd-0", extradata + sps_offset, sps_size);
ff_AMediaFormat_setBuffer(format, "csd-1", extradata + pps_offset, pps_size);
for (i = 0; i < MAX_PPS_COUNT; i++) {
if (ps.pps_list[i]) {
pps = (const PPS*)ps.pps_list[i]->data;
break;
}
}
av_freep(&extradata);
if (pps) {
if (ps.sps_list[pps->sps_id]) {
sps = (const SPS*)ps.sps_list[pps->sps_id]->data;
}
}
if (pps && sps) {
ff_AMediaFormat_setBuffer(format, "csd-0", (void*)sps->data, sps->data_size);
ff_AMediaFormat_setBuffer(format, "csd-1", (void*)pps->data, pps->data_size);
} else {
ff_AMediaFormat_setBuffer(format, "csd-0", avctx->extradata, avctx->extradata_size);
av_log(avctx, AV_LOG_ERROR, "Could not extract PPS/SPS from extradata");
ret = AVERROR_INVALIDDATA;
goto done;
}
if ((ret = ff_mediacodec_dec_init(avctx, &s->ctx, CODEC_MIME, format)) < 0) {
@ -236,6 +157,9 @@ done:
if (ret < 0) {
mediacodec_decode_close(avctx);
}
ff_h264_ps_uninit(&ps);
return ret;
}