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ffmpeg.wasm-core
Commit fce48f5b authored by Michael Niedermayer's avatar Michael Niedermayer
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Merge videobuf and audiobuf. 

Originally committed as revision 16401 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent f48d5457
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Showing with 18 additions and 20 deletions
libavformat/rmdec.c
View file @ fce48f5b
......@@ -24,14 +24,13 @@
#include "rm.h"
struct RMStream {
uint8_t *videobuf; ///< place to store merged video frame
uint8_t *buf; ///< place to store merged video frame / reordered audio data
int videobufsize; ///< current assembled frame size
int videobufpos; ///< position for the next slice in the video buffer
int curpic_num; ///< picture number of current frame
int cur_slice, slices;
int64_t pktpos; ///< first slice position in file
/// Audio descrambling matrix parameters
uint8_t *audiobuf; ///< place to store reordered audio data
int64_t audiotimestamp; ///< Audio packet timestamp
int sub_packet_cnt; // Subpacket counter, used while reading
int sub_packet_size, sub_packet_h, coded_framesize; ///< Descrambling parameters from container
......@@ -81,8 +80,7 @@ RMStream *ff_rm_alloc_rmstream (void)
void ff_rm_free_rmstream (RMStream *rms)
{
av_freep(&rms->videobuf);
av_freep(&rms->audiobuf);
av_freep(&rms->buf);
}
static int rm_read_audio_stream_info(AVFormatContext *s, ByteIOContext *pb,
......@@ -157,7 +155,7 @@ static int rm_read_audio_stream_info(AVFormatContext *s, ByteIOContext *pb,
return -1;
}
ast->audiobuf = av_malloc(ast->audio_framesize * sub_packet_h);
ast->buf = av_malloc(ast->audio_framesize * sub_packet_h);
} else if ((!strcmp(buf, "cook")) || (!strcmp(buf, "atrc")) || (!strcmp(buf, "sipr"))) {
int codecdata_length;
get_be16(pb); get_byte(pb);
......@@ -188,7 +186,7 @@ static int rm_read_audio_stream_info(AVFormatContext *s, ByteIOContext *pb,
return -1;
}
ast->audiobuf = av_malloc(ast->audio_framesize * sub_packet_h);
ast->buf = av_malloc(ast->audio_framesize * sub_packet_h);
} else if (!strcmp(buf, "raac") || !strcmp(buf, "racp")) {
int codecdata_length;
get_be16(pb); get_byte(pb);
......@@ -523,8 +521,8 @@ static int rm_assemble_video_frame(AVFormatContext *s, ByteIOContext *pb,
if((seq & 0x7F) == 1 || vst->curpic_num != pic_num){
vst->slices = ((hdr & 0x3F) << 1) + 1;
vst->videobufsize = len2 + 8*vst->slices + 1;
av_free(vst->videobuf);
if(!(vst->videobuf = av_malloc(vst->videobufsize)))
av_free(vst->buf);
if(!(vst->buf = av_malloc(vst->videobufsize)))
return AVERROR(ENOMEM);
vst->videobufpos = 8*vst->slices + 1;
vst->cur_slice = 0;
......@@ -536,21 +534,21 @@ static int rm_assemble_video_frame(AVFormatContext *s, ByteIOContext *pb,
if(++vst->cur_slice > vst->slices)
return 1;
AV_WL32(vst->videobuf - 7 + 8*vst->cur_slice, 1);
AV_WL32(vst->videobuf - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
AV_WL32(vst->buf - 7 + 8*vst->cur_slice, 1);
AV_WL32(vst->buf - 3 + 8*vst->cur_slice, vst->videobufpos - 8*vst->slices - 1);
if(vst->videobufpos + len > vst->videobufsize)
return 1;
if (get_buffer(pb, vst->videobuf + vst->videobufpos, len) != len)
if (get_buffer(pb, vst->buf + vst->videobufpos, len) != len)
return AVERROR(EIO);
vst->videobufpos += len;
rm->remaining_len-= len;
if(type == 2 || (vst->videobufpos) == vst->videobufsize){
vst->videobuf[0] = vst->cur_slice-1;
vst->buf[0] = vst->cur_slice-1;
if(av_new_packet(pkt, vst->videobufpos - 8*(vst->slices - vst->cur_slice)) < 0)
return AVERROR(ENOMEM);
memcpy(pkt->data, vst->videobuf, 1 + 8*vst->cur_slice);
memcpy(pkt->data + 1 + 8*vst->cur_slice, vst->videobuf + 1 + 8*vst->slices,
memcpy(pkt->data, vst->buf, 1 + 8*vst->cur_slice);
memcpy(pkt->data + 1 + 8*vst->cur_slice, vst->buf + 1 + 8*vst->slices,
vst->videobufpos - 1 - 8*vst->slices);
pkt->pts = AV_NOPTS_VALUE;
pkt->pos = vst->pktpos;
......@@ -606,12 +604,12 @@ ff_rm_parse_packet (AVFormatContext *s, ByteIOContext *pb,
switch(st->codec->codec_id) {
case CODEC_ID_RA_288:
for (x = 0; x < h/2; x++)
get_buffer(pb, ast->audiobuf+x*2*w+y*cfs, cfs);
get_buffer(pb, ast->buf+x*2*w+y*cfs, cfs);
break;
case CODEC_ID_ATRAC3:
case CODEC_ID_COOK:
for (x = 0; x < w/sps; x++)
get_buffer(pb, ast->audiobuf+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
get_buffer(pb, ast->buf+sps*(h*x+((h+1)/2)*(y&1)+(y>>1)), sps);
break;
}
......@@ -623,7 +621,7 @@ ff_rm_parse_packet (AVFormatContext *s, ByteIOContext *pb,
rm->audio_pkt_cnt = h * w / st->codec->block_align - 1;
// Release first audio packet
av_new_packet(pkt, st->codec->block_align);
memcpy(pkt->data, ast->audiobuf, st->codec->block_align);
memcpy(pkt->data, ast->buf, st->codec->block_align);
*timestamp = ast->audiotimestamp;
*flags = 2; // Mark first packet as keyframe
}
......@@ -686,7 +684,7 @@ ff_rm_retrieve_cache (AVFormatContext *s, ByteIOContext *pb,
av_get_packet(pb, pkt, ast->sub_packet_lengths[ast->sub_packet_cnt - rm->audio_pkt_cnt]);
else {
av_new_packet(pkt, st->codec->block_align);
memcpy(pkt->data, ast->audiobuf + st->codec->block_align *
memcpy(pkt->data, ast->buf + st->codec->block_align *
(ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - rm->audio_pkt_cnt),
st->codec->block_align);
}
......@@ -720,13 +718,13 @@ static int rm_read_packet(AVFormatContext *s, AVPacket *pkt)
for (y = 0; y < ast->sub_packet_h; y++)
for (x = 0; x < ast->sub_packet_h/2; x++)
if (get_buffer(pb, ast->audiobuf+x*2*ast->audio_framesize+y*ast->coded_framesize, ast->coded_framesize) <= 0)
if (get_buffer(pb, ast->buf+x*2*ast->audio_framesize+y*ast->coded_framesize, ast->coded_framesize) <= 0)
return AVERROR(EIO);
rm->audio_stream_num = 0;
rm->audio_pkt_cnt = ast->sub_packet_h * ast->audio_framesize / st->codec->block_align - 1;
// Release first audio packet
av_new_packet(pkt, st->codec->block_align);
memcpy(pkt->data, ast->audiobuf, st->codec->block_align);
memcpy(pkt->data, ast->buf, st->codec->block_align);
pkt->flags |= PKT_FLAG_KEY; // Mark first packet as keyframe
pkt->stream_index = 0;
} else {
......
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