751 lines
23 KiB
C
Executable file
751 lines
23 KiB
C
Executable file
/* Electronic Arts Multimedia File Demuxer
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* Copyright (c) 2004 The FFmpeg project
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* Copyright (c) 2006-2008 Peter Ross
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/**
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* @file
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* Electronic Arts Multimedia file demuxer (WVE/UV2/etc.)
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* by Robin Kay (komadori at gekkou.co.uk)
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*/
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#include <inttypes.h>
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#include "libavutil/intreadwrite.h"
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#include "avformat.h"
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#include "internal.h"
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#define SCHl_TAG MKTAG('S', 'C', 'H', 'l')
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#define SEAD_TAG MKTAG('S', 'E', 'A', 'D') /* Sxxx header */
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#define SNDC_TAG MKTAG('S', 'N', 'D', 'C') /* Sxxx data */
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#define SEND_TAG MKTAG('S', 'E', 'N', 'D') /* Sxxx end */
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#define SHEN_TAG MKTAG('S', 'H', 'E', 'N') /* SxEN header */
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#define SDEN_TAG MKTAG('S', 'D', 'E', 'N') /* SxEN data */
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#define SEEN_TAG MKTAG('S', 'E', 'E', 'N') /* SxEN end */
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#define ISNh_TAG MKTAG('1', 'S', 'N', 'h') /* 1SNx header */
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#define EACS_TAG MKTAG('E', 'A', 'C', 'S')
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#define ISNd_TAG MKTAG('1', 'S', 'N', 'd') /* 1SNx data */
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#define ISNe_TAG MKTAG('1', 'S', 'N', 'e') /* 1SNx end */
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#define PT00_TAG MKTAG('P', 'T', 0x0, 0x0)
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#define GSTR_TAG MKTAG('G', 'S', 'T', 'R')
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#define SCDl_TAG MKTAG('S', 'C', 'D', 'l')
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#define SCEl_TAG MKTAG('S', 'C', 'E', 'l')
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#define kVGT_TAG MKTAG('k', 'V', 'G', 'T') /* TGV I-frame */
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#define fVGT_TAG MKTAG('f', 'V', 'G', 'T') /* TGV P-frame */
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#define mTCD_TAG MKTAG('m', 'T', 'C', 'D') /* MDEC */
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#define MADk_TAG MKTAG('M', 'A', 'D', 'k') /* MAD I-frame */
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#define MADm_TAG MKTAG('M', 'A', 'D', 'm') /* MAD P-frame */
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#define MADe_TAG MKTAG('M', 'A', 'D', 'e') /* MAD lqp-frame */
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#define MPCh_TAG MKTAG('M', 'P', 'C', 'h') /* MPEG-2 */
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#define TGQs_TAG MKTAG('T', 'G', 'Q', 's') /* TGQ I-frame (appears in .TGQ files) */
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#define pQGT_TAG MKTAG('p', 'Q', 'G', 'T') /* TGQ I-frame (appears in .UV files) */
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#define pIQT_TAG MKTAG('p', 'I', 'Q', 'T') /* TQI/UV2 I-frame (.UV2/.WVE) */
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#define MVhd_TAG MKTAG('M', 'V', 'h', 'd')
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#define MV0K_TAG MKTAG('M', 'V', '0', 'K')
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#define MV0F_TAG MKTAG('M', 'V', '0', 'F')
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#define AVhd_TAG MKTAG('A', 'V', 'h', 'd')
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#define AV0K_TAG MKTAG('A', 'V', '0', 'K')
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#define AV0F_TAG MKTAG('A', 'V', '0', 'F')
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#define MVIh_TAG MKTAG('M', 'V', 'I', 'h') /* CMV header */
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#define MVIf_TAG MKTAG('M', 'V', 'I', 'f') /* CMV I-frame */
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#define AVP6_TAG MKTAG('A', 'V', 'P', '6')
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typedef struct VideoProperties {
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enum AVCodecID codec;
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AVRational time_base;
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int width, height;
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int nb_frames;
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int stream_index;
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} VideoProperties;
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typedef struct EaDemuxContext {
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int big_endian;
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VideoProperties video, alpha;
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enum AVCodecID audio_codec;
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int audio_stream_index;
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int bytes;
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int sample_rate;
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int num_channels;
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int num_samples;
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int platform;
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} EaDemuxContext;
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static uint32_t read_arbitrary(AVIOContext *pb)
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{
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uint8_t size, byte;
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int i;
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uint32_t word;
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size = avio_r8(pb);
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word = 0;
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for (i = 0; i < size; i++) {
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byte = avio_r8(pb);
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word <<= 8;
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word |= byte;
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}
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return word;
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}
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static int process_audio_header_elements(AVFormatContext *s)
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{
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EaDemuxContext *ea = s->priv_data;
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AVIOContext *pb = s->pb;
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int in_header = 1;
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int compression_type = -1, revision = -1, revision2 = -1;
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ea->bytes = 2;
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ea->sample_rate = -1;
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ea->num_channels = 1;
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while (!avio_feof(pb) && in_header) {
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int in_subheader;
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uint8_t byte;
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byte = avio_r8(pb);
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switch (byte) {
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case 0xFD:
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av_log(s, AV_LOG_DEBUG, "entered audio subheader\n");
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in_subheader = 1;
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while (!avio_feof(pb) && in_subheader) {
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uint8_t subbyte;
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subbyte = avio_r8(pb);
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switch (subbyte) {
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case 0x80:
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revision = read_arbitrary(pb);
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av_log(s, AV_LOG_DEBUG,
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"revision (element 0x80) set to 0x%08x\n", revision);
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break;
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case 0x82:
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ea->num_channels = read_arbitrary(pb);
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av_log(s, AV_LOG_DEBUG,
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"num_channels (element 0x82) set to 0x%08x\n",
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ea->num_channels);
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break;
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case 0x83:
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compression_type = read_arbitrary(pb);
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av_log(s, AV_LOG_DEBUG,
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"compression_type (element 0x83) set to 0x%08x\n",
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compression_type);
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break;
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case 0x84:
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ea->sample_rate = read_arbitrary(pb);
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av_log(s, AV_LOG_DEBUG,
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"sample_rate (element 0x84) set to %i\n",
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ea->sample_rate);
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break;
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case 0x85:
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ea->num_samples = read_arbitrary(pb);
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av_log(s, AV_LOG_DEBUG,
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"num_samples (element 0x85) set to 0x%08x\n",
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ea->num_samples);
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break;
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case 0x8A:
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av_log(s, AV_LOG_DEBUG,
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"element 0x%02x set to 0x%08"PRIx32"\n",
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subbyte, read_arbitrary(pb));
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av_log(s, AV_LOG_DEBUG, "exited audio subheader\n");
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in_subheader = 0;
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break;
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case 0xA0:
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revision2 = read_arbitrary(pb);
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av_log(s, AV_LOG_DEBUG,
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"revision2 (element 0xA0) set to 0x%08x\n",
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revision2);
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break;
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case 0xFF:
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av_log(s, AV_LOG_DEBUG,
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"end of header block reached (within audio subheader)\n");
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in_subheader = 0;
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in_header = 0;
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break;
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default:
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av_log(s, AV_LOG_DEBUG,
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"element 0x%02x set to 0x%08"PRIx32"\n",
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subbyte, read_arbitrary(pb));
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break;
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}
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}
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break;
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case 0xFF:
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av_log(s, AV_LOG_DEBUG, "end of header block reached\n");
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in_header = 0;
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break;
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default:
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av_log(s, AV_LOG_DEBUG,
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"header element 0x%02x set to 0x%08"PRIx32"\n",
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byte, read_arbitrary(pb));
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break;
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}
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}
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switch (compression_type) {
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case 0:
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ea->audio_codec = AV_CODEC_ID_PCM_S16LE;
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break;
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case 7:
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ea->audio_codec = AV_CODEC_ID_ADPCM_EA;
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break;
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case -1:
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switch (revision) {
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case 1:
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ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R1;
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break;
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case 2:
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ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2;
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break;
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case 3:
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ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R3;
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break;
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case -1:
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break;
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default:
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avpriv_request_sample(s, "stream type; revision=%i", revision);
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return 0;
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}
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switch (revision2) {
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case 8:
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ea->audio_codec = AV_CODEC_ID_PCM_S16LE_PLANAR;
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break;
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case 10:
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switch (revision) {
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case -1:
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case 2: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R1; break;
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case 3: ea->audio_codec = AV_CODEC_ID_ADPCM_EA_R2; break;
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default:
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avpriv_request_sample(s, "stream type; revision=%i, revision2=%i", revision, revision2);
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return 0;
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}
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break;
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case 15:
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case 16:
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ea->audio_codec = AV_CODEC_ID_MP3;
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break;
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case -1:
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break;
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default:
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ea->audio_codec = AV_CODEC_ID_NONE;
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avpriv_request_sample(s, "stream type; revision2=%i", revision2);
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return 0;
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}
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break;
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default:
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avpriv_request_sample(s,
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"stream type; compression_type=%i",
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compression_type);
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return 0;
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}
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if (ea->audio_codec == AV_CODEC_ID_NONE && ea->platform == 0x01)
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ea->audio_codec = AV_CODEC_ID_ADPCM_PSX;
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if (ea->sample_rate == -1)
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ea->sample_rate = revision == 3 ? 48000 : 22050;
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return 1;
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}
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static void process_audio_header_eacs(AVFormatContext *s)
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{
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EaDemuxContext *ea = s->priv_data;
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AVIOContext *pb = s->pb;
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int compression_type;
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ea->sample_rate = ea->big_endian ? avio_rb32(pb) : avio_rl32(pb);
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ea->bytes = avio_r8(pb); /* 1=8-bit, 2=16-bit */
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ea->num_channels = avio_r8(pb);
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compression_type = avio_r8(pb);
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avio_skip(pb, 13);
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switch (compression_type) {
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case 0:
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switch (ea->bytes) {
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case 1:
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ea->audio_codec = AV_CODEC_ID_PCM_S8;
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break;
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case 2:
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ea->audio_codec = AV_CODEC_ID_PCM_S16LE;
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break;
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}
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break;
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case 1:
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ea->audio_codec = AV_CODEC_ID_PCM_MULAW;
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ea->bytes = 1;
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break;
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case 2:
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ea->audio_codec = AV_CODEC_ID_ADPCM_IMA_EA_EACS;
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break;
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default:
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avpriv_request_sample(s,
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"stream type; audio compression_type=%i",
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compression_type);
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}
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}
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static void process_audio_header_sead(AVFormatContext *s)
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{
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EaDemuxContext *ea = s->priv_data;
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AVIOContext *pb = s->pb;
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ea->sample_rate = avio_rl32(pb);
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ea->bytes = avio_rl32(pb); /* 1=8-bit, 2=16-bit */
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ea->num_channels = avio_rl32(pb);
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ea->audio_codec = AV_CODEC_ID_ADPCM_IMA_EA_SEAD;
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}
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static void process_video_header_mdec(AVFormatContext *s, VideoProperties *video)
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{
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AVIOContext *pb = s->pb;
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avio_skip(pb, 4);
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video->width = avio_rl16(pb);
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video->height = avio_rl16(pb);
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video->time_base = (AVRational) { 1, 15 };
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video->codec = AV_CODEC_ID_MDEC;
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}
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static int process_video_header_vp6(AVFormatContext *s, VideoProperties *video)
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{
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AVIOContext *pb = s->pb;
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avio_skip(pb, 8);
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video->nb_frames = avio_rl32(pb);
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avio_skip(pb, 4);
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video->time_base.den = avio_rl32(pb);
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video->time_base.num = avio_rl32(pb);
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if (video->time_base.den <= 0 || video->time_base.num <= 0) {
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av_log(s, AV_LOG_ERROR, "Timebase is invalid\n");
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return AVERROR_INVALIDDATA;
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}
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video->codec = AV_CODEC_ID_VP6;
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return 1;
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}
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static void process_video_header_cmv(AVFormatContext *s, VideoProperties *video)
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{
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int fps;
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avio_skip(s->pb, 10);
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fps = avio_rl16(s->pb);
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if (fps)
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video->time_base = (AVRational) { 1, fps };
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video->codec = AV_CODEC_ID_CMV;
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}
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/* Process EA file header.
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* Return 1 if the EA file is valid and successfully opened, 0 otherwise. */
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static int process_ea_header(AVFormatContext *s)
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{
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uint32_t blockid, size = 0;
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EaDemuxContext *ea = s->priv_data;
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AVIOContext *pb = s->pb;
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int i;
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for (i = 0; i < 5 && (!ea->audio_codec || !ea->video.codec); i++) {
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uint64_t startpos = avio_tell(pb);
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int err = 0;
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blockid = avio_rl32(pb);
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size = avio_rl32(pb);
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if (i == 0)
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ea->big_endian = size > av_bswap32(size);
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if (ea->big_endian)
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size = av_bswap32(size);
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if (size < 8) {
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av_log(s, AV_LOG_ERROR, "chunk size too small\n");
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return AVERROR_INVALIDDATA;
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}
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switch (blockid) {
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case ISNh_TAG:
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if (avio_rl32(pb) != EACS_TAG) {
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avpriv_request_sample(s, "unknown 1SNh headerid");
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return 0;
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}
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process_audio_header_eacs(s);
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break;
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case SCHl_TAG:
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case SHEN_TAG:
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blockid = avio_rl32(pb);
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if (blockid == GSTR_TAG) {
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avio_skip(pb, 4);
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} else if ((blockid & 0xFF) != (PT00_TAG & 0xFF)) {
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blockid = avio_rl32(pb);
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}
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ea->platform = (blockid >> 16) & 0xFF;
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err = process_audio_header_elements(s);
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break;
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case SEAD_TAG:
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process_audio_header_sead(s);
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break;
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case MVIh_TAG:
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process_video_header_cmv(s, &ea->video);
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break;
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case kVGT_TAG:
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ea->video.codec = AV_CODEC_ID_TGV;
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break;
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case mTCD_TAG:
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process_video_header_mdec(s, &ea->video);
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break;
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case MPCh_TAG:
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ea->video.codec = AV_CODEC_ID_MPEG2VIDEO;
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break;
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case pQGT_TAG:
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case TGQs_TAG:
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ea->video.codec = AV_CODEC_ID_TGQ;
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ea->video.time_base = (AVRational) { 1, 15 };
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break;
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case pIQT_TAG:
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ea->video.codec = AV_CODEC_ID_TQI;
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ea->video.time_base = (AVRational) { 1, 15 };
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break;
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case MADk_TAG:
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ea->video.codec = AV_CODEC_ID_MAD;
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avio_skip(pb, 6);
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ea->video.time_base = (AVRational) { avio_rl16(pb), 1000 };
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break;
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case MVhd_TAG:
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err = process_video_header_vp6(s, &ea->video);
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break;
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case AVhd_TAG:
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err = process_video_header_vp6(s, &ea->alpha);
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break;
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}
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if (err < 0) {
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av_log(s, AV_LOG_ERROR, "error parsing header: %i\n", err);
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return err;
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}
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avio_seek(pb, startpos + size, SEEK_SET);
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}
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avio_seek(pb, 0, SEEK_SET);
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return 1;
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}
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static int ea_probe(const AVProbeData *p)
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{
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unsigned big_endian, size;
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switch (AV_RL32(&p->buf[0])) {
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case ISNh_TAG:
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case SCHl_TAG:
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case SEAD_TAG:
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case SHEN_TAG:
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case kVGT_TAG:
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case MADk_TAG:
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case MPCh_TAG:
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case MVhd_TAG:
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case MVIh_TAG:
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case AVP6_TAG:
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break;
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default:
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return 0;
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}
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size = AV_RL32(&p->buf[4]);
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big_endian = size > 0x000FFFFF;
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if (big_endian)
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size = av_bswap32(size);
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if (size > 0xfffff || size < 8)
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return 0;
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return AVPROBE_SCORE_MAX;
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}
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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,
|
|
};
|