* Motion Pixels MVI Demuxer
* Copyright (c) 2008 Gregory Montoir (cyx@users.sourceforge.net)
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
+#include <inttypes.h>
+
+#include "libavutil/channel_layout.h"
#include "avformat.h"
+#include "internal.h"
#define MVI_FRAC_BITS 10
#define MVI_VIDEO_STREAM_INDEX 1
typedef struct MviDemuxContext {
- unsigned int (*get_int)(ByteIOContext *);
+ unsigned int (*get_int)(AVIOContext *);
uint32_t audio_data_size;
uint64_t audio_size_counter;
uint64_t audio_frame_size;
int video_frame_size;
} MviDemuxContext;
-static int read_header(AVFormatContext *s, AVFormatParameters *ap)
+static int read_header(AVFormatContext *s)
{
MviDemuxContext *mvi = s->priv_data;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
AVStream *ast, *vst;
unsigned int version, frames_count, msecs_per_frame, player_version;
- ast = av_new_stream(s, 0);
+ ast = avformat_new_stream(s, NULL);
if (!ast)
return AVERROR(ENOMEM);
- vst = av_new_stream(s, 0);
+ vst = avformat_new_stream(s, NULL);
if (!vst)
return AVERROR(ENOMEM);
vst->codec->extradata_size = 2;
vst->codec->extradata = av_mallocz(2 + FF_INPUT_BUFFER_PADDING_SIZE);
- version = get_byte(pb);
- vst->codec->extradata[0] = get_byte(pb);
- vst->codec->extradata[1] = get_byte(pb);
- frames_count = get_le32(pb);
- msecs_per_frame = get_le32(pb);
- vst->codec->width = get_le16(pb);
- vst->codec->height = get_le16(pb);
- get_byte(pb);
- ast->codec->sample_rate = get_le16(pb);
- mvi->audio_data_size = get_le32(pb);
- get_byte(pb);
- player_version = get_le32(pb);
- get_le16(pb);
- get_byte(pb);
+ version = avio_r8(pb);
+ vst->codec->extradata[0] = avio_r8(pb);
+ vst->codec->extradata[1] = avio_r8(pb);
+ frames_count = avio_rl32(pb);
+ msecs_per_frame = avio_rl32(pb);
+ vst->codec->width = avio_rl16(pb);
+ vst->codec->height = avio_rl16(pb);
+ avio_r8(pb);
+ ast->codec->sample_rate = avio_rl16(pb);
+ mvi->audio_data_size = avio_rl32(pb);
+ avio_r8(pb);
+ player_version = avio_rl32(pb);
+ avio_rl16(pb);
+ avio_r8(pb);
if (frames_count == 0 || mvi->audio_data_size == 0)
return AVERROR_INVALIDDATA;
return AVERROR_INVALIDDATA;
}
- av_set_pts_info(ast, 64, 1, ast->codec->sample_rate);
+ avpriv_set_pts_info(ast, 64, 1, ast->codec->sample_rate);
ast->codec->codec_type = AVMEDIA_TYPE_AUDIO;
- ast->codec->codec_id = CODEC_ID_PCM_U8;
+ ast->codec->codec_id = AV_CODEC_ID_PCM_U8;
ast->codec->channels = 1;
+ ast->codec->channel_layout = AV_CH_LAYOUT_MONO;
ast->codec->bits_per_coded_sample = 8;
ast->codec->bit_rate = ast->codec->sample_rate * 8;
- av_set_pts_info(vst, 64, msecs_per_frame, 1000000);
+ avpriv_set_pts_info(vst, 64, msecs_per_frame, 1000000);
+ vst->avg_frame_rate = av_inv_q(vst->time_base);
vst->codec->codec_type = AVMEDIA_TYPE_VIDEO;
- vst->codec->codec_id = CODEC_ID_MOTIONPIXELS;
+ vst->codec->codec_id = AV_CODEC_ID_MOTIONPIXELS;
- mvi->get_int = (vst->codec->width * vst->codec->height < (1 << 16)) ? get_le16 : get_le24;
+ mvi->get_int = (vst->codec->width * vst->codec->height < (1 << 16)) ? avio_rl16 : avio_rl24;
mvi->audio_frame_size = ((uint64_t)mvi->audio_data_size << MVI_FRAC_BITS) / frames_count;
+ if (mvi->audio_frame_size <= 1 << MVI_FRAC_BITS - 1) {
+ av_log(s, AV_LOG_ERROR,
+ "Invalid audio_data_size (%"PRIu32") or frames_count (%u)\n",
+ mvi->audio_data_size, frames_count);
+ return AVERROR_INVALIDDATA;
+ }
+
mvi->audio_size_counter = (ast->codec->sample_rate * 830 / mvi->audio_frame_size - 1) * mvi->audio_frame_size;
mvi->audio_size_left = mvi->audio_data_size;
{
int ret, count;
MviDemuxContext *mvi = s->priv_data;
- ByteIOContext *pb = s->pb;
+ AVIOContext *pb = s->pb;
if (mvi->video_frame_size == 0) {
mvi->video_frame_size = (mvi->get_int)(pb);
}
AVInputFormat ff_mvi_demuxer = {
- "mvi",
- NULL_IF_CONFIG_SMALL("Motion Pixels MVI format"),
- sizeof(MviDemuxContext),
- NULL,
- read_header,
- read_packet,
- .extensions = "mvi"
+ .name = "mvi",
+ .long_name = NULL_IF_CONFIG_SMALL("Motion Pixels MVI"),
+ .priv_data_size = sizeof(MviDemuxContext),
+ .read_header = read_header,
+ .read_packet = read_packet,
+ .extensions = "mvi",
};
projects / ffmpeg / blobdiff