752 lines
23 KiB
C
752 lines
23 KiB
C
|
/* Electronic Arts Multimedia File Demuxer
|
||
|
|
* Copyright (c) 2004 The FFmpeg project
|
||
|
|
* Copyright (c) 2006-2008 Peter Ross
|
||
|
|
*
|
||
|
|
* 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
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @file
|
||
|
|
* Electronic Arts Multimedia file demuxer (WVE/UV2/etc.)
|
||
|
|
* by Robin Kay (komadori at gekkou.co.uk)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <inttypes.h>
|
||
|
|
|
||
|
|
#include "libavutil/intreadwrite.h"
|
||
|
|
#include "avformat.h"
|
||
|
|
#include "internal.h"
|
||
|
|
|
||
|
|
#define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
|
||
|
|
#define SEAD_TAG MKTAG('S', 'E', 'A', 'D') /* Sxxx header */
|
||
|
|
#define SNDC_TAG MKTAG('S', 'N', 'D', 'C') /* Sxxx data */
|
||
|
|
#define SEND_TAG MKTAG('S', 'E', 'N', 'D') /* Sxxx end */
|
||
|
|
#define SHEN_TAG MKTAG('S', 'H', 'E', 'N') /* SxEN header */
|
||
|
|
#define SDEN_TAG MKTAG('S', 'D', 'E', 'N') /* SxEN data */
|
||
|
|
#define SEEN_TAG MKTAG('S', 'E', 'E', 'N') /* SxEN end */
|
||
|
|
#define ISNh_TAG MKTAG('1', 'S', 'N', 'h') /* 1SNx header */
|
||
|
|
#define EACS_TAG MKTAG('E', 'A', 'C', 'S')
|
||
|
|
#define ISNd_TAG MKTAG('1', 'S', 'N', 'd') /* 1SNx data */
|
||
|
|
#define ISNe_TAG MKTAG('1', 'S', 'N', 'e') /* 1SNx end */
|
||
|
|
#define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
|
||
|
|
#define GSTR_TAG MKTAG('G', 'S', 'T', 'R')
|
||
|
|
#define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
|
||
|
|
#define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
|
||
|
|
#define kVGT_TAG MKTAG('k', 'V', 'G', 'T') /* TGV I-frame */
|
||
|
|
#define fVGT_TAG MKTAG('f', 'V', 'G', 'T') /* TGV P-frame */
|
||
|
|
#define mTCD_TAG MKTAG('m', 'T', 'C', 'D') /* MDEC */
|
||
|
|
#define MADk_TAG MKTAG('M', 'A', 'D', 'k') /* MAD I-frame */
|
||
|
|
#define MADm_TAG MKTAG('M', 'A', 'D', 'm') /* MAD P-frame */
|
||
|
|
#define MADe_TAG MKTAG('M', 'A', 'D', 'e') /* MAD lqp-frame */
|
||
|
|
#define MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG-2 */
|
||
|
|
#define TGQs_TAG MKTAG('T', 'G', 'Q', 's') /* TGQ I-frame (appears in .TGQ files) */
|
||
|
|
#define pQGT_TAG MKTAG('p', 'Q', 'G', 'T') /* TGQ I-frame (appears in .UV files) */
|
||
|
|
#define pIQT_TAG MKTAG('p', 'I', 'Q', 'T') /* TQI/UV2 I-frame (.UV2/.WVE) */
|
||
|
|
#define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
|
||
|
|
#define MV0K_TAG MKTAG('M', 'V', '0', 'K')
|
||
|
|
#define MV0F_TAG MKTAG('M', 'V', '0', 'F')
|
||
|
|
#define AVhd_TAG MKTAG('A', 'V', 'h', 'd')
|
||
|
|
#define AV0K_TAG MKTAG('A', 'V', '0', 'K')
|
||
|
|
#define AV0F_TAG MKTAG('A', 'V', '0', 'F')
|
||
|
|
#define MVIh_TAG MKTAG('M', 'V', 'I', 'h') /* CMV header */
|
||
|
|
#define MVIf_TAG MKTAG('M', 'V', 'I', 'f') /* CMV I-frame */
|
||
|
|
#define AVP6_TAG MKTAG('A', 'V', 'P', '6')
|
||
|
|
|
||
|
|
typedef struct VideoProperties {
|
||
|
|
enum AVCodecID codec;
|
||
|
|
AVRational time_base;
|
||
|
|
int width, height;
|
||
|
|
int nb_frames;
|
||
|
|
int stream_index;
|
||
|
|
} VideoProperties;
|
||
|
|
|
||
|
|
typedef struct EaDemuxContext {
|
||
|
|
int big_endian;
|
||
|
|
|
||
|
|
VideoProperties video, alpha;
|
||
|
|
|
||
|
|
enum AVCodecID audio_codec;
|
||
|
|
int audio_stream_index;
|
||
|
|
|
||
|
|
int bytes;
|
||
|
|
int sample_rate;
|
||
|
|
int num_channels;
|
||
|
|
int num_samples;
|
||
|
|
|
||
|
|
int platform;
|
||
|
|
} EaDemuxContext;
|
||
|
|
|
||
|
|
static uint32_t read_arbitrary(AVIOContext *pb)
|
||
|
|
{
|
||
|
|
uint8_t size, byte;
|
||
|
|
int i;
|
||
|
|
uint32_t word;
|
||
|
|
|
||
|
|
size = avio_r8(pb);
|
||
|
|
|
||
|
|
word = 0;
|
||
|
|
for (i = 0; i < size; i++) {
|
||
|
|
byte = avio_r8(pb);
|
||
|
|
word <<= 8;
|
||
|
|
word |= byte;
|
||
|
|
}
|
||
|
|
|
||
|
|
return word;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int process_audio_header_elements(AVFormatContext *s)
|
||
|
|
{
|
||
|
|
EaDemuxContext *ea = s->priv_data;
|
||
|
|
AVIOContext *pb = s->pb;
|
||
|
|
int in_header = 1;
|
||
|
|
int compression_type = -1, revision = -1, revision2 = -1;
|
||
|
|
|
||
|
|
ea->bytes = 2;
|
||
|
|
ea->sample_rate = -1;
|
||
|
|
ea->num_channels = 1;
|
||
|
|
|
||
|
|
while (!avio_feof(pb) && in_header) {
|
||
|
|
int in_subheader;
|
||
|
|
uint8_t byte;
|
||
|
|
byte = avio_r8(pb);
|
||
|
|
|
||
|
|
switch (byte) {
|
||
|
|
case 0xFD:
|
||
|
|
av_log(s, AV_LOG_DEBUG, "entered audio subheader\n");
|
||
|
|
in_subheader = 1;
|
||
|
|
while (!avio_feof(pb) && in_subheader) {
|
||
|
|
uint8_t subbyte;
|
||
|
|
subbyte = avio_r8(pb);
|
||
|
|
|
||
|
|
switch (subbyte) {
|
||
|
|
case 0x80:
|
||
|
|
revision = read_arbitrary(pb);
|
||
|
|
av_log(s, AV_LOG_DEBUG,
|
||
|
|
"revision (element 0x80) set to 0x%08x\n", revision);
|
||
|
|
break;
|
||
|
|
case 0x82:
|
||
|
|
ea->num_channels = read_arbitrary(pb);
|
||
|
|
av_log(s, AV_LOG_DEBUG,
|
||
|
|
"num_channels (element 0x82) set to 0x%08x\n",
|
||
|
|
ea->num_channels);
|
||
|
|
break;
|
||
|
|
case 0x83:
|
||
|
|
compression_type = read_arbitrary(pb);
|
||
|
|
av_log(s, AV_LOG_DEBUG,
|
||
|
|
"compression_type (element 0x83) set to 0x%08x\n",
|
||
|
|
compression_type);
|
||
|
|
break;
|
||
|
|
case 0x84:
|
||
|
|
ea->sample_rate = read_arbitrary(pb);
|
||
|
|
av_log(s, AV_LOG_DEBUG,
|
||
|
|
"sample_rate (element 0x84) set to %i\n",
|
||
|
|
ea->sample_rate);
|
||
|
|
break;
|
||
|
|
case 0x85:
|
||
|
|
ea->num_samples = read_arbitrary(pb);
|
||
|
|
av_log(s, AV_LOG_DEBUG,
|
||
|
|
"num_samples (element 0x85) set to 0x%08x\n",
|
||
|
|
ea->num_samples);
|
||
|
|
break;
|
||
|
|
case 0x8A:
|
||
|
|
av_log(s, AV_LOG_DEBUG,
|
||
|
|
"element 0x%02x set to 0x%08"PRIx32"\n",
|
||
|
|
subbyte, read_arbitrary(pb));
|
||
|
|
av_log(s, AV_LOG_DEBUG, "exited audio subheader\n");
|
||
|
|
in_subheader = 0;
|
||
|
|
break;
|
||
|
|
case 0xA0:
|
||
|
|
revision2 = read_arbitrary(pb);
|
||
|
|
av_log(s, AV_LOG_DEBUG,
|
||
|
|
"revision2 (element 0xA0) set to 0x%08x\n",
|
||
|
|
revision2);
|
||
|
|
break;
|
||
|
|
case 0xFF:
|
||
|
|
av_log(s, AV_LOG_DEBUG,
|
||
|
|
"end of header block reached (within audio subheader)\n");
|
||
|
|
in_subheader = 0;
|
||
|
|
in_header = 0;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
av_log(s, AV_LOG_DEBUG,
|
||
|
|
"element 0x%02x set to 0x%08"PRIx32"\n",
|
||
|
|
subbyte, read_arbitrary(pb));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 0xFF:
|
||
|
|
av_log(s, AV_LOG_DEBUG, "end of header block reached\n");
|
||
|
|
in_header = 0;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
av_log(s, AV_LOG_DEBUG,
|
||
|
|
"header element 0x%02x set to 0x%08"PRIx32"\n",
|
||
|
|
byte, read_arbitrary(pb));
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (compression_type) {
|
||
|
|
case 0:
|
||
|
|
ea->audio_codec = AV_CODEC_ID_PCM_S16LE;
|
||
|
|
break;
|
||
|
|
case 7:
|
||
|
|
ea->audio_codec = AV_CODEC_ID_ADPCM_EA;
|
||
|
|
break;
|
||
|
|
case -1:
|
||
|
|
switch (revision) {
|
||
|
|
case 1:
|
||
|
|
ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R1;
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2;
|
||
|
|
break;
|
||
|
|
case 3:
|
||
|
|
ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R3;
|
||
|
|
break;
|
||
|
|
case -1:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
avpriv_request_sample(s, "stream type; revision=%i", revision);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
switch (revision2) {
|
||
|
|
case 8:
|
||
|
|
ea->audio_codec = AV_CODEC_ID_PCM_S16LE_PLANAR;
|
||
|
|
break;
|
||
|
|
case 10:
|
||
|
|
switch (revision) {
|
||
|
|
case -1:
|
||
|
|
case 2: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R1; break;
|
||
|
|
case 3: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2; break;
|
||
|
|
default:
|
||
|
|
avpriv_request_sample(s, "stream type; revision=%i, revision2=%i", revision, revision2);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 15:
|
||
|
|
case 16:
|
||
|
|
ea->audio_codec = AV_CODEC_ID_MP3;
|
||
|
|
break;
|
||
|
|
case -1:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
ea->audio_codec = AV_CODEC_ID_NONE;
|
||
|
|
avpriv_request_sample(s, "stream type; revision2=%i", revision2);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
avpriv_request_sample(s,
|
||
|
|
"stream type; compression_type=%i",
|
||
|
|
compression_type);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ea->audio_codec == AV_CODEC_ID_NONE && ea->platform == 0x01)
|
||
|
|
ea->audio_codec = AV_CODEC_ID_ADPCM_PSX;
|
||
|
|
if (ea->sample_rate == -1)
|
||
|
|
ea->sample_rate = revision == 3 ? 48000 : 22050;
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void process_audio_header_eacs(AVFormatContext *s)
|
||
|
|
{
|
||
|
|
EaDemuxContext *ea = s->priv_data;
|
||
|
|
AVIOContext *pb = s->pb;
|
||
|
|
int compression_type;
|
||
|
|
|
||
|
|
ea->sample_rate = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
|
||
|
|
ea->bytes = avio_r8(pb); /* 1=8-bit, 2=16-bit */
|
||
|
|
ea->num_channels = avio_r8(pb);
|
||
|
|
compression_type = avio_r8(pb);
|
||
|
|
avio_skip(pb, 13);
|
||
|
|
|
||
|
|
switch (compression_type) {
|
||
|
|
case 0:
|
||
|
|
switch (ea->bytes) {
|
||
|
|
case 1:
|
||
|
|
ea->audio_codec = AV_CODEC_ID_PCM_S8;
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
ea->audio_codec = AV_CODEC_ID_PCM_S16LE;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 1:
|
||
|
|
ea->audio_codec = AV_CODEC_ID_PCM_MULAW;
|
||
|
|
ea->bytes = 1;
|
||
|
|
break;
|
||
|
|
case 2:
|
||
|
|
ea->audio_codec = AV_CODEC_ID_ADPCM_IMA_EA_EACS;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
avpriv_request_sample(s,
|
||
|
|
"stream type; audio compression_type=%i",
|
||
|
|
compression_type);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void process_audio_header_sead(AVFormatContext *s)
|
||
|
|
{
|
||
|
|
EaDemuxContext *ea = s->priv_data;
|
||
|
|
AVIOContext *pb = s->pb;
|
||
|
|
|
||
|
|
ea->sample_rate = avio_rl32(pb);
|
||
|
|
ea->bytes = avio_rl32(pb); /* 1=8-bit, 2=16-bit */
|
||
|
|
ea->num_channels = avio_rl32(pb);
|
||
|
|
ea->audio_codec = AV_CODEC_ID_ADPCM_IMA_EA_SEAD;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void process_video_header_mdec(AVFormatContext *s, VideoProperties *video)
|
||
|
|
{
|
||
|
|
AVIOContext *pb = s->pb;
|
||
|
|
avio_skip(pb, 4);
|
||
|
|
video->width = avio_rl16(pb);
|
||
|
|
video->height = avio_rl16(pb);
|
||
|
|
video->time_base = (AVRational) { 1, 15 };
|
||
|
|
video->codec = AV_CODEC_ID_MDEC;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int process_video_header_vp6(AVFormatContext *s, VideoProperties *video)
|
||
|
|
{
|
||
|
|
AVIOContext *pb = s->pb;
|
||
|
|
|
||
|
|
avio_skip(pb, 8);
|
||
|
|
video->nb_frames = avio_rl32(pb);
|
||
|
|
avio_skip(pb, 4);
|
||
|
|
video->time_base.den = avio_rl32(pb);
|
||
|
|
video->time_base.num = avio_rl32(pb);
|
||
|
|
if (video->time_base.den <= 0 || video->time_base.num <= 0) {
|
||
|
|
av_log(s, AV_LOG_ERROR, "Timebase is invalid\n");
|
||
|
|
return AVERROR_INVALIDDATA;
|
||
|
|
}
|
||
|
|
video->codec = AV_CODEC_ID_VP6;
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void process_video_header_cmv(AVFormatContext *s, VideoProperties *video)
|
||
|
|
{
|
||
|
|
int fps;
|
||
|
|
|
||
|
|
avio_skip(s->pb, 10);
|
||
|
|
fps = avio_rl16(s->pb);
|
||
|
|
if (fps)
|
||
|
|
video->time_base = (AVRational) { 1, fps };
|
||
|
|
video->codec = AV_CODEC_ID_CMV;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Process EA file header.
|
||
|
|
* Return 1 if the EA file is valid and successfully opened, 0 otherwise. */
|
||
|
|
static int process_ea_header(AVFormatContext *s)
|
||
|
|
{
|
||
|
|
uint32_t blockid, size = 0;
|
||
|
|
EaDemuxContext *ea = s->priv_data;
|
||
|
|
AVIOContext *pb = s->pb;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for (i = 0; i < 5 && (!ea->audio_codec || !ea->video.codec); i++) {
|
||
|
|
uint64_t startpos = avio_tell(pb);
|
||
|
|
int err = 0;
|
||
|
|
|
||
|
|
blockid = avio_rl32(pb);
|
||
|
|
size = avio_rl32(pb);
|
||
|
|
if (i == 0)
|
||
|
|
ea->big_endian = size > av_bswap32(size);
|
||
|
|
if (ea->big_endian)
|
||
|
|
size = av_bswap32(size);
|
||
|
|
|
||
|
|
if (size < 8) {
|
||
|
|
av_log(s, AV_LOG_ERROR, "chunk size too small\n");
|
||
|
|
return AVERROR_INVALIDDATA;
|
||
|
|
}
|
||
|
|
|
||
|
|
switch (blockid) {
|
||
|
|
case ISNh_TAG:
|
||
|
|
if (avio_rl32(pb) != EACS_TAG) {
|
||
|
|
avpriv_request_sample(s, "unknown 1SNh headerid");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
process_audio_header_eacs(s);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case SCHl_TAG:
|
||
|
|
case SHEN_TAG:
|
||
|
|
blockid = avio_rl32(pb);
|
||
|
|
if (blockid == GSTR_TAG) {
|
||
|
|
avio_skip(pb, 4);
|
||
|
|
} else if ((blockid & 0xFF) != (PT00_TAG & 0xFF)) {
|
||
|
|
blockid = avio_rl32(pb);
|
||
|
|
}
|
||
|
|
ea->platform = (blockid >> 16) & 0xFF;
|
||
|
|
err = process_audio_header_elements(s);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case SEAD_TAG:
|
||
|
|
process_audio_header_sead(s);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MVIh_TAG:
|
||
|
|
process_video_header_cmv(s, &ea->video);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case kVGT_TAG:
|
||
|
|
ea->video.codec = AV_CODEC_ID_TGV;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case mTCD_TAG:
|
||
|
|
process_video_header_mdec(s, &ea->video);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MPCh_TAG:
|
||
|
|
ea->video.codec = AV_CODEC_ID_MPEG2VIDEO;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case pQGT_TAG:
|
||
|
|
case TGQs_TAG:
|
||
|
|
ea->video.codec = AV_CODEC_ID_TGQ;
|
||
|
|
ea->video.time_base = (AVRational) { 1, 15 };
|
||
|
|
break;
|
||
|
|
|
||
|
|
case pIQT_TAG:
|
||
|
|
ea->video.codec = AV_CODEC_ID_TQI;
|
||
|
|
ea->video.time_base = (AVRational) { 1, 15 };
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MADk_TAG:
|
||
|
|
ea->video.codec = AV_CODEC_ID_MAD;
|
||
|
|
avio_skip(pb, 6);
|
||
|
|
ea->video.time_base = (AVRational) { avio_rl16(pb), 1000 };
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MVhd_TAG:
|
||
|
|
err = process_video_header_vp6(s, &ea->video);
|
||
|
|
break;
|
||
|
|
|
||
|
|
case AVhd_TAG:
|
||
|
|
err = process_video_header_vp6(s, &ea->alpha);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (err < 0) {
|
||
|
|
av_log(s, AV_LOG_ERROR, "error parsing header: %i\n", err);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
avio_seek(pb, startpos + size, SEEK_SET);
|
||
|
|
}
|
||
|
|
|
||
|
|
avio_seek(pb, 0, SEEK_SET);
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ea_probe(const AVProbeData *p)
|
||
|
|
{
|
||
|
|
unsigned big_endian, size;
|
||
|
|
|
||
|
|
switch (AV_RL32(&p->buf[0])) {
|
||
|
|
case ISNh_TAG:
|
||
|
|
case SCHl_TAG:
|
||
|
|
case SEAD_TAG:
|
||
|
|
case SHEN_TAG:
|
||
|
|
case kVGT_TAG:
|
||
|
|
case MADk_TAG:
|
||
|
|
case MPCh_TAG:
|
||
|
|
case MVhd_TAG:
|
||
|
|
case MVIh_TAG:
|
||
|
|
case AVP6_TAG:
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
size = AV_RL32(&p->buf[4]);
|
||
|
|
big_endian = size > 0x000FFFFF;
|
||
|
|
if (big_endian)
|
||
|
|
size = av_bswap32(size);
|
||
|
|
if (size > 0xfffff || size < 8)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
return AVPROBE_SCORE_MAX;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int init_video_stream(AVFormatContext *s, VideoProperties *video)
|
||
|
|
{
|
||
|
|
AVStream *st;
|
||
|
|
|
||
|
|
if (!video->codec)
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
/* initialize the video decoder stream */
|
||
|
|
st = avformat_new_stream(s, NULL);
|
||
|
|
if (!st)
|
||
|
|
return AVERROR(ENOMEM);
|
||
|
|
video->stream_index = st->index;
|
||
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_VIDEO;
|
||
|
|
st->codecpar->codec_id = video->codec;
|
||
|
|
// parsing is necessary to make FFmpeg generate correct timestamps
|
||
|
|
if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO)
|
||
|
|
st->need_parsing = AVSTREAM_PARSE_HEADERS;
|
||
|
|
st->codecpar->codec_tag = 0; /* no fourcc */
|
||
|
|
st->codecpar->width = video->width;
|
||
|
|
st->codecpar->height = video->height;
|
||
|
|
st->duration = st->nb_frames = video->nb_frames;
|
||
|
|
if (video->time_base.num)
|
||
|
|
avpriv_set_pts_info(st, 64, video->time_base.num, video->time_base.den);
|
||
|
|
st->r_frame_rate =
|
||
|
|
st->avg_frame_rate = av_inv_q(video->time_base);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ea_read_header(AVFormatContext *s)
|
||
|
|
{
|
||
|
|
EaDemuxContext *ea = s->priv_data;
|
||
|
|
AVStream *st;
|
||
|
|
|
||
|
|
if (process_ea_header(s)<=0)
|
||
|
|
return AVERROR(EIO);
|
||
|
|
|
||
|
|
if (init_video_stream(s, &ea->video) || init_video_stream(s, &ea->alpha))
|
||
|
|
return AVERROR(ENOMEM);
|
||
|
|
|
||
|
|
if (ea->audio_codec) {
|
||
|
|
if (ea->num_channels <= 0 || ea->num_channels > 2) {
|
||
|
|
av_log(s, AV_LOG_WARNING,
|
||
|
|
"Unsupported number of channels: %d\n", ea->num_channels);
|
||
|
|
ea->audio_codec = 0;
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
if (ea->sample_rate <= 0) {
|
||
|
|
av_log(s, AV_LOG_ERROR,
|
||
|
|
"Unsupported sample rate: %d\n", ea->sample_rate);
|
||
|
|
ea->audio_codec = 0;
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
if (ea->bytes <= 0 || ea->bytes > 2) {
|
||
|
|
av_log(s, AV_LOG_ERROR,
|
||
|
|
"Invalid number of bytes per sample: %d\n", ea->bytes);
|
||
|
|
ea->audio_codec = AV_CODEC_ID_NONE;
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* initialize the audio decoder stream */
|
||
|
|
st = avformat_new_stream(s, NULL);
|
||
|
|
if (!st)
|
||
|
|
return AVERROR(ENOMEM);
|
||
|
|
avpriv_set_pts_info(st, 33, 1, ea->sample_rate);
|
||
|
|
st->codecpar->codec_type = AVMEDIA_TYPE_AUDIO;
|
||
|
|
st->codecpar->codec_id = ea->audio_codec;
|
||
|
|
st->codecpar->codec_tag = 0; /* no tag */
|
||
|
|
st->codecpar->channels = ea->num_channels;
|
||
|
|
st->codecpar->sample_rate = ea->sample_rate;
|
||
|
|
st->codecpar->bits_per_coded_sample = ea->bytes * 8;
|
||
|
|
st->codecpar->bit_rate = (int64_t)st->codecpar->channels *
|
||
|
|
st->codecpar->sample_rate *
|
||
|
|
st->codecpar->bits_per_coded_sample / 4;
|
||
|
|
st->codecpar->block_align = st->codecpar->channels *
|
||
|
|
st->codecpar->bits_per_coded_sample;
|
||
|
|
ea->audio_stream_index = st->index;
|
||
|
|
st->start_time = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int ea_read_packet(AVFormatContext *s, AVPacket *pkt)
|
||
|
|
{
|
||
|
|
EaDemuxContext *ea = s->priv_data;
|
||
|
|
AVIOContext *pb = s->pb;
|
||
|
|
int partial_packet = 0;
|
||
|
|
int hit_end = 0;
|
||
|
|
unsigned int chunk_type, chunk_size;
|
||
|
|
int ret = 0, packet_read = 0, key = 0;
|
||
|
|
int av_uninit(num_samples);
|
||
|
|
|
||
|
|
while ((!packet_read && !hit_end) || partial_packet) {
|
||
|
|
chunk_type = avio_rl32(pb);
|
||
|
|
chunk_size = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
|
||
|
|
if (chunk_size < 8)
|
||
|
|
return AVERROR_INVALIDDATA;
|
||
|
|
chunk_size -= 8;
|
||
|
|
|
||
|
|
switch (chunk_type) {
|
||
|
|
/* audio data */
|
||
|
|
case ISNh_TAG:
|
||
|
|
/* header chunk also contains data; skip over the header portion */
|
||
|
|
if (chunk_size < 32)
|
||
|
|
return AVERROR_INVALIDDATA;
|
||
|
|
avio_skip(pb, 32);
|
||
|
|
chunk_size -= 32;
|
||
|
|
case ISNd_TAG:
|
||
|
|
case SCDl_TAG:
|
||
|
|
case SNDC_TAG:
|
||
|
|
case SDEN_TAG:
|
||
|
|
if (!ea->audio_codec) {
|
||
|
|
avio_skip(pb, chunk_size);
|
||
|
|
break;
|
||
|
|
} else if (ea->audio_codec == AV_CODEC_ID_PCM_S16LE_PLANAR ||
|
||
|
|
ea->audio_codec == AV_CODEC_ID_MP3) {
|
||
|
|
num_samples = avio_rl32(pb);
|
||
|
|
avio_skip(pb, 8);
|
||
|
|
chunk_size -= 12;
|
||
|
|
} else if (ea->audio_codec == AV_CODEC_ID_ADPCM_PSX) {
|
||
|
|
avio_skip(pb, 8);
|
||
|
|
chunk_size -= 8;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (partial_packet) {
|
||
|
|
avpriv_request_sample(s, "video header followed by audio packet");
|
||
|
|
av_packet_unref(pkt);
|
||
|
|
partial_packet = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!chunk_size)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
ret = av_get_packet(pb, pkt, chunk_size);
|
||
|
|
if (ret < 0)
|
||
|
|
return ret;
|
||
|
|
pkt->stream_index = ea->audio_stream_index;
|
||
|
|
|
||
|
|
switch (ea->audio_codec) {
|
||
|
|
case AV_CODEC_ID_ADPCM_EA:
|
||
|
|
case AV_CODEC_ID_ADPCM_EA_R1:
|
||
|
|
case AV_CODEC_ID_ADPCM_EA_R2:
|
||
|
|
case AV_CODEC_ID_ADPCM_IMA_EA_EACS:
|
||
|
|
case AV_CODEC_ID_ADPCM_EA_R3:
|
||
|
|
if (pkt->size < 4) {
|
||
|
|
av_log(s, AV_LOG_ERROR, "Packet is too short\n");
|
||
|
|
return AVERROR_INVALIDDATA;
|
||
|
|
}
|
||
|
|
if (ea->audio_codec == AV_CODEC_ID_ADPCM_EA_R3)
|
||
|
|
pkt->duration = AV_RB32(pkt->data);
|
||
|
|
else
|
||
|
|
pkt->duration = AV_RL32(pkt->data);
|
||
|
|
break;
|
||
|
|
case AV_CODEC_ID_ADPCM_IMA_EA_SEAD:
|
||
|
|
pkt->duration = ret * 2 / ea->num_channels;
|
||
|
|
break;
|
||
|
|
case AV_CODEC_ID_PCM_S16LE_PLANAR:
|
||
|
|
case AV_CODEC_ID_MP3:
|
||
|
|
pkt->duration = num_samples;
|
||
|
|
break;
|
||
|
|
case AV_CODEC_ID_ADPCM_PSX:
|
||
|
|
pkt->duration = chunk_size / (16 * ea->num_channels) * 28;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
pkt->duration = chunk_size / (ea->bytes * ea->num_channels);
|
||
|
|
}
|
||
|
|
|
||
|
|
packet_read = 1;
|
||
|
|
break;
|
||
|
|
|
||
|
|
/* ending tag */
|
||
|
|
case 0:
|
||
|
|
case ISNe_TAG:
|
||
|
|
case SCEl_TAG:
|
||
|
|
case SEND_TAG:
|
||
|
|
case SEEN_TAG:
|
||
|
|
while (!avio_feof(pb)) {
|
||
|
|
int tag = avio_rl32(pb);
|
||
|
|
|
||
|
|
if (tag == ISNh_TAG ||
|
||
|
|
tag == SCHl_TAG ||
|
||
|
|
tag == SEAD_TAG ||
|
||
|
|
tag == SHEN_TAG) {
|
||
|
|
avio_skip(pb, -4);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (avio_feof(pb))
|
||
|
|
ret = AVERROR_EOF;
|
||
|
|
hit_end = 1;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MVIh_TAG:
|
||
|
|
case kVGT_TAG:
|
||
|
|
case pQGT_TAG:
|
||
|
|
case TGQs_TAG:
|
||
|
|
case MADk_TAG:
|
||
|
|
key = AV_PKT_FLAG_KEY;
|
||
|
|
case MVIf_TAG:
|
||
|
|
case fVGT_TAG:
|
||
|
|
case MADm_TAG:
|
||
|
|
case MADe_TAG:
|
||
|
|
avio_seek(pb, -8, SEEK_CUR); // include chunk preamble
|
||
|
|
chunk_size += 8;
|
||
|
|
goto get_video_packet;
|
||
|
|
|
||
|
|
case mTCD_TAG:
|
||
|
|
if (chunk_size < 8)
|
||
|
|
return AVERROR_INVALIDDATA;
|
||
|
|
|
||
|
|
avio_skip(pb, 8); // skip ea DCT header
|
||
|
|
chunk_size -= 8;
|
||
|
|
goto get_video_packet;
|
||
|
|
|
||
|
|
case MV0K_TAG:
|
||
|
|
case AV0K_TAG:
|
||
|
|
case MPCh_TAG:
|
||
|
|
case pIQT_TAG:
|
||
|
|
key = AV_PKT_FLAG_KEY;
|
||
|
|
case MV0F_TAG:
|
||
|
|
case AV0F_TAG:
|
||
|
|
get_video_packet:
|
||
|
|
if (!chunk_size)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
if (partial_packet) {
|
||
|
|
ret = av_append_packet(pb, pkt, chunk_size);
|
||
|
|
} else
|
||
|
|
ret = av_get_packet(pb, pkt, chunk_size);
|
||
|
|
if (ret < 0) {
|
||
|
|
packet_read = 1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
partial_packet = chunk_type == MVIh_TAG;
|
||
|
|
if (chunk_type == AV0K_TAG || chunk_type == AV0F_TAG)
|
||
|
|
pkt->stream_index = ea->alpha.stream_index;
|
||
|
|
else
|
||
|
|
pkt->stream_index = ea->video.stream_index;
|
||
|
|
pkt->flags |= key;
|
||
|
|
packet_read = 1;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
avio_skip(pb, chunk_size);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ret >= 0 && hit_end && !packet_read)
|
||
|
|
return AVERROR(EAGAIN);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
AVInputFormat ff_ea_demuxer = {
|
||
|
|
.name = "ea",
|
||
|
|
.long_name = NULL_IF_CONFIG_SMALL("Electronic Arts Multimedia"),
|
||
|
|
.priv_data_size = sizeof(EaDemuxContext),
|
||
|
|
.read_probe = ea_probe,
|
||
|
|
.read_header = ea_read_header,
|
||
|
|
.read_packet = ea_read_packet,
|
||
|
|
};
|