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599 lines
21 KiB
599 lines
21 KiB
/* |
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Copyright (c) 2012, Broadcom Europe Ltd |
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All rights reserved. |
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|
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Redistribution and use in source and binary forms, with or without |
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modification, are permitted provided that the following conditions are met: |
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* Redistributions of source code must retain the above copyright |
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notice, this list of conditions and the following disclaimer. |
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* Redistributions in binary form must reproduce the above copyright |
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notice, this list of conditions and the following disclaimer in the |
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documentation and/or other materials provided with the distribution. |
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* Neither the name of the copyright holder nor the |
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names of its contributors may be used to endorse or promote products |
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derived from this software without specific prior written permission. |
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|
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY |
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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|
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#include "containers/core/containers_private.h" |
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#include "containers/core/containers_io_helpers.h" |
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#include "containers/core/containers_utils.h" |
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#include "containers/core/containers_logging.h" |
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#include "simple_common.h" |
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/****************************************************************************** |
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Defines. |
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******************************************************************************/ |
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#define MAX_LINE_SIZE 512 |
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#define LINE_PADDING 3 /* 2 for newline + 1 for null */ |
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#define MAX_TRACKS 4 |
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#define MAX_HEADER_LINES 512 |
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|
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typedef enum SIMPLE_VARIANT_T |
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{ |
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VARIANT_DEFAULT = 0, |
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VARIANT_MMAL, |
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VARIANT_OMX |
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} SIMPLE_VARIANT_T; |
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|
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/****************************************************************************** |
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Type definitions |
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******************************************************************************/ |
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typedef struct SIMPLE_PACKET_STATE_T |
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{ |
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unsigned int track_num; |
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unsigned int flags; |
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uint64_t metadata_offset; /* Offset in metadata stream */ |
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uint32_t data_size; /* Size of current data packet */ |
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uint32_t data_left; /* Data left to read in current packet */ |
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int64_t pts; |
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} SIMPLE_PACKET_STATE_T; |
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typedef struct VC_CONTAINER_TRACK_MODULE_T |
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{ |
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SIMPLE_PACKET_STATE_T *state; |
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SIMPLE_PACKET_STATE_T local_state; |
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VC_CONTAINER_IO_T *io; |
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uint64_t data_offset; /* Current offset in data stream */ |
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char uri[MAX_LINE_SIZE+1]; |
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SIMPLE_VARIANT_T variant; |
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} VC_CONTAINER_TRACK_MODULE_T; |
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typedef struct VC_CONTAINER_MODULE_T |
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{ |
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VC_CONTAINER_TRACK_T *tracks[MAX_TRACKS]; |
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char line[MAX_LINE_SIZE + LINE_PADDING]; |
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int64_t metadata_offset; |
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/* Shared packet state. This is used when the tracks are in sync, |
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* and for the track at the earliest position in the file when they are |
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* not in sync */ |
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SIMPLE_PACKET_STATE_T state; |
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} VC_CONTAINER_MODULE_T; |
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|
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/****************************************************************************** |
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Function prototypes |
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******************************************************************************/ |
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VC_CONTAINER_STATUS_T simple_reader_open( VC_CONTAINER_T * ); |
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|
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/****************************************************************************** |
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Local Functions |
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******************************************************************************/ |
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static VC_CONTAINER_STATUS_T simple_read_line( VC_CONTAINER_T *ctx ) |
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{ |
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VC_CONTAINER_MODULE_T *module = ctx->priv->module; |
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unsigned int i, bytes = PEEK_BYTES(ctx, module->line, sizeof(module->line)-1); |
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|
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if (!bytes) |
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return VC_CONTAINER_ERROR_EOS; |
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|
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/* Find new-line marker */ |
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for (i = 0; i < bytes; i++) |
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if (module->line[i] == '\n') |
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break; |
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|
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/* Bail out if line is bigger than the maximum allowed */ |
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if (i == sizeof(module->line)-1) |
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{ |
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LOG_ERROR(ctx, "line too big"); |
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return VC_CONTAINER_ERROR_CORRUPTED; |
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} |
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if (i < bytes) |
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{ |
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module->line[i++] = 0; |
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if (i < bytes && module->line[i] == '\r') |
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i++; |
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} |
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module->line[i] = 0; /* Make sure the line is null terminated */ |
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SKIP_BYTES(ctx, i); |
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return VC_CONTAINER_SUCCESS; |
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} |
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static VC_CONTAINER_STATUS_T simple_read_header( VC_CONTAINER_T *ctx ) |
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{ |
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VC_CONTAINER_MODULE_T *module = ctx->priv->module; |
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VC_CONTAINER_TRACK_T *track = NULL; |
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VC_CONTAINER_FOURCC_T fourcc; |
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int matches, width, height, channels, samplerate, bps, blockalign, value; |
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unsigned int lines = 1; |
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|
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/* Skip the signature */ |
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if (simple_read_line(ctx) != VC_CONTAINER_SUCCESS) |
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return VC_CONTAINER_ERROR_CORRUPTED; |
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|
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while (lines++ < MAX_HEADER_LINES && |
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simple_read_line(ctx) == VC_CONTAINER_SUCCESS) |
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{ |
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/* Our exit condition is the end signature */ |
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if (!memcmp(module->line, SIGNATURE_END_STRING, sizeof(SIGNATURE_STRING)-1)) |
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{ |
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if (track) ctx->tracks[ctx->tracks_num++] = track; |
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return VC_CONTAINER_SUCCESS; |
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} |
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/* Start of track description */ |
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if (!memcmp(module->line, "TRACK ", sizeof("TRACK ")-1)) |
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{ |
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/* Add track we were constructing */ |
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if (track) ctx->tracks[ctx->tracks_num++] = track; |
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track = NULL; |
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if (ctx->tracks_num >= MAX_TRACKS) |
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{ |
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LOG_ERROR(ctx, "too many tracks, ignoring: %s", module->line); |
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continue; |
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} |
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track = vc_container_allocate_track(ctx, sizeof(*track->priv->module)); |
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if (!track) |
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return VC_CONTAINER_ERROR_OUT_OF_MEMORY; |
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track->is_enabled = true; |
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track->format->flags |= VC_CONTAINER_ES_FORMAT_FLAG_FRAMED; |
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if ((matches = sscanf(module->line, |
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"TRACK video, %4c, %i, %i", |
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(char *)&fourcc, &width, &height)) > 0) |
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{ |
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track->format->es_type = VC_CONTAINER_ES_TYPE_VIDEO; |
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track->format->codec = fourcc; |
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if (matches > 1) track->format->type->video.width = width; |
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if (matches > 2) track->format->type->video.height = height; |
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} |
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else if ((matches = sscanf(module->line, |
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"TRACK audio, %4c, %i, %i, %i, %i", |
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(char *)&fourcc, &channels, &samplerate, &bps, |
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&blockalign)) > 0) |
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{ |
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track->format->es_type = VC_CONTAINER_ES_TYPE_AUDIO; |
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track->format->codec = fourcc; |
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if (matches > 1) track->format->type->audio.channels = channels; |
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if (matches > 2) track->format->type->audio.sample_rate = samplerate; |
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if (matches > 3) track->format->type->audio.bits_per_sample = bps; |
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if (matches > 4) track->format->type->audio.block_align = blockalign; |
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} |
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if ((matches = sscanf(module->line, |
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"TRACK subpicture, %4c, %i", |
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(char *)&fourcc, &value)) > 0) |
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{ |
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track->format->es_type = VC_CONTAINER_ES_TYPE_SUBPICTURE; |
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track->format->codec = fourcc; |
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if (matches > 1) track->format->type->subpicture.encoding = value; |
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} |
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} |
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if (!track) |
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continue; /* Nothing interesting */ |
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/* VARIANT of the syntax */ |
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if (sscanf(module->line, CONFIG_VARIANT" %i", &value) == 1) |
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{ |
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track->priv->module->variant = value; |
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LOG_FORMAT(ctx, CONFIG_VARIANT": %i", value); |
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} |
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/* URI for elementary stream */ |
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else if (sscanf(module->line, CONFIG_URI" %s", track->priv->module->uri) == 1) |
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LOG_FORMAT(ctx, CONFIG_URI": %s", track->priv->module->uri); |
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/* COCDEC_VARIANT of elementary stream */ |
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else if (sscanf(module->line, CONFIG_CODEC_VARIANT" %4c", (char *)&fourcc) == 1) |
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{ |
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track->format->codec_variant = fourcc; |
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LOG_FORMAT(ctx, CONFIG_CODEC_VARIANT": %4.4s", (char *)&fourcc); |
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} |
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/* BITRATE of elementary stream */ |
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else if (sscanf(module->line, CONFIG_BITRATE" %i", &value) == 1) |
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{ |
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track->format->bitrate = value; |
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LOG_FORMAT(ctx, CONFIG_BITRATE": %i", value); |
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} |
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/* UNFRAMED elementary stream */ |
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else if (!memcmp(module->line, CONFIG_UNFRAMED, sizeof(CONFIG_UNFRAMED)-1)) |
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{ |
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track->format->flags &= ~VC_CONTAINER_ES_FORMAT_FLAG_FRAMED; |
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LOG_FORMAT(ctx, CONFIG_UNFRAMED); |
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} |
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/* VIDEO_CROP information */ |
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else if (track->format->es_type == VC_CONTAINER_ES_TYPE_VIDEO && |
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sscanf(module->line, CONFIG_VIDEO_CROP" %i, %i", &width, &height) == 2) |
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{ |
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track->format->type->video.visible_width = width; |
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track->format->type->video.visible_height = height; |
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LOG_FORMAT(ctx, CONFIG_VIDEO_CROP": %i, %i", width, height); |
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} |
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/* VIDEO_ASPECT information */ |
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else if (track->format->es_type == VC_CONTAINER_ES_TYPE_VIDEO && |
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sscanf(module->line, CONFIG_VIDEO_ASPECT" %i, %i", &width, &height) == 2) |
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{ |
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track->format->type->video.par_num = width; |
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track->format->type->video.par_den = height; |
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LOG_FORMAT(ctx, CONFIG_VIDEO_ASPECT": %i, %i", width, height); |
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} |
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} |
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if (track) vc_container_free_track(ctx, track); |
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return VC_CONTAINER_ERROR_CORRUPTED; |
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} |
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static uint32_t simple_convert_packet_flags(VC_CONTAINER_T *ctx, |
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unsigned int track_num, uint32_t flags) |
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{ |
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typedef struct { uint32_t from; uint32_t to; } convert_from_t; |
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const convert_from_t convert_from_mmal[] = |
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{ {1<<1, VC_CONTAINER_PACKET_FLAG_FRAME_START}, |
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{1<<2, VC_CONTAINER_PACKET_FLAG_FRAME_END}, |
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{1<<3, VC_CONTAINER_PACKET_FLAG_KEYFRAME}, |
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{1<<4, VC_CONTAINER_PACKET_FLAG_DISCONTINUITY}, |
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{1<<5, VC_CONTAINER_PACKET_FLAG_CONFIG}, |
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{1<<6, VC_CONTAINER_PACKET_FLAG_ENCRYPTED}, |
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{0, 0} }; |
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const convert_from_t convert_from_omx[] = |
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{ {0x10, VC_CONTAINER_PACKET_FLAG_FRAME_END}, |
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{0x20, VC_CONTAINER_PACKET_FLAG_KEYFRAME}, |
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{0x80, VC_CONTAINER_PACKET_FLAG_CONFIG}, |
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{0, 0} }; |
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const convert_from_t *convert_from = NULL; |
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int i; |
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switch (ctx->tracks[track_num]->priv->module->variant) |
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{ |
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case VARIANT_MMAL: convert_from = convert_from_mmal; break; |
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case VARIANT_OMX: convert_from = convert_from_omx; break; |
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default: break; |
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} |
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if (convert_from) |
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{ |
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uint32_t new_flags = 0; |
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for (i = 0; convert_from[i].from; i++) |
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if (convert_from[i].from & flags) |
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new_flags |= convert_from[i].to; |
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return new_flags; |
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} |
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return flags; |
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} |
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static int64_t simple_convert_packet_pts(VC_CONTAINER_T *ctx, |
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unsigned int track_num, int64_t pts, uint32_t flags) |
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{ |
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if (ctx->tracks[track_num]->priv->module->variant == VARIANT_OMX && |
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flags & 0x100) |
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return VC_CONTAINER_TIME_UNKNOWN; |
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return pts; |
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} |
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/***************************************************************************** |
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Functions exported as part of the Container Module API |
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*****************************************************************************/ |
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static VC_CONTAINER_STATUS_T simple_reader_read( VC_CONTAINER_T *ctx, |
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VC_CONTAINER_PACKET_T *packet, uint32_t flags ) |
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{ |
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VC_CONTAINER_MODULE_T *module = ctx->priv->module; |
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VC_CONTAINER_TRACK_MODULE_T *track_module; |
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VC_CONTAINER_STATUS_T status = VC_CONTAINER_SUCCESS; |
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SIMPLE_PACKET_STATE_T *state; |
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|
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/* If a specific track has been selected, use the track packet state */ |
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if (flags & VC_CONTAINER_READ_FLAG_FORCE_TRACK) |
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state = ctx->tracks[packet->track]->priv->module->state; |
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else |
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state = &module->state; |
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|
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/* Switch to the next packet when the current one is empty */ |
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if (!state->data_left) |
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{ |
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unsigned int track_num, size; |
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int64_t pts; |
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int flags; |
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SEEK(ctx, state->metadata_offset); |
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status = simple_read_line(ctx); |
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if (status != VC_CONTAINER_SUCCESS) |
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return status; |
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|
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if (sscanf(module->line, "%u %u %"PRIi64" %i", |
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&track_num, &size, &pts, &flags) != 4 && |
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(track_num = 0, sscanf(module->line, "%u %"PRIi64" %i", |
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&size, &pts, &flags)) != 3) |
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{ |
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LOG_ERROR(ctx, "invalid metadata: %s", module->line); |
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return VC_CONTAINER_ERROR_CORRUPTED; |
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} |
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state->metadata_offset = STREAM_POSITION(ctx); |
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|
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if (track_num >= ctx->tracks_num) |
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{ |
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LOG_DEBUG(ctx, "skipping %i bytes for track %d/%d", |
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size, track_num, ctx->tracks_num); |
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return VC_CONTAINER_ERROR_CONTINUE; |
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} |
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|
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/* If we are reading from the global state (i.e. normal read or forced |
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read from the track on the global state), and the track we found is |
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not on the global state, reconnect the two */ |
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if (state == &module->state && |
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ctx->tracks[track_num]->priv->module->state != &module->state) |
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{ |
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LOG_DEBUG(ctx, "reconnect track %u to the global state", track_num); |
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ctx->tracks[track_num]->priv->module->state = &module->state; |
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module->state = ctx->tracks[track_num]->priv->module->local_state; |
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return VC_CONTAINER_ERROR_CONTINUE; |
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} |
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|
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state->data_size = state->data_left = size; |
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state->track_num = track_num; |
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state->flags = simple_convert_packet_flags(ctx, track_num, flags); |
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state->pts = simple_convert_packet_pts(ctx, track_num, pts, flags); |
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|
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/* Discard empty packets */ |
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if (!state->data_size && !state->flags) |
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return VC_CONTAINER_ERROR_CONTINUE; |
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} |
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|
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/* If there is data from another track skip past it */ |
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if ((flags & VC_CONTAINER_READ_FLAG_FORCE_TRACK) && |
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state->track_num != packet->track) |
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{ |
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LOG_DEBUG(ctx, "skipping track %d/%d as we are ignoring it", |
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state->track_num, ctx->tracks_num); |
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|
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track_module = ctx->tracks[packet->track]->priv->module; |
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|
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/* Handle disconnection from global state */ |
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if (state == &module->state && |
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ctx->tracks[state->track_num]->priv->module->state == &module->state) |
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{ |
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/* Make a copy of the global state */ |
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LOG_DEBUG(ctx, "using local state on track %d", packet->track); |
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track_module->local_state = module->state; |
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track_module->state = &track_module->local_state; |
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} |
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|
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track_module->state->data_left = 0; |
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return VC_CONTAINER_ERROR_CONTINUE; |
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} |
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|
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/* |
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* From this point we know we have the packet which was requested |
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*/ |
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|
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/* !!!! If we aren't in the right position in the file go there now. */ |
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|
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track_module = ctx->tracks[state->track_num]->priv->module; |
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packet->track = state->track_num; |
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packet->size = state->data_left; |
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packet->frame_size = (state->flags & VC_CONTAINER_PACKET_FLAG_FRAME) ? |
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state->data_size : 0; |
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packet->flags = state->flags; |
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packet->pts = state->pts; |
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packet->dts = VC_CONTAINER_TIME_UNKNOWN; |
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if (state->data_left != state->data_size) |
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packet->flags &= ~VC_CONTAINER_PACKET_FLAG_FRAME_START; |
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|
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if (flags & VC_CONTAINER_READ_FLAG_SKIP) |
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{ |
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track_module->data_offset += state->data_left; |
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state->data_left = 0; |
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return VC_CONTAINER_SUCCESS; |
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} |
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|
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if (flags & VC_CONTAINER_READ_FLAG_INFO) |
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{ |
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return VC_CONTAINER_SUCCESS; |
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} |
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|
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/* Now try to read data into buffer */ |
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vc_container_io_seek(track_module->io, track_module->data_offset); |
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|
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packet->size = vc_container_io_read(track_module->io, packet->data, |
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MIN(packet->buffer_size, state->data_left)); |
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state->data_left -= packet->size; |
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track_module->data_offset += packet->size; |
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|
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if (state->data_left) |
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packet->flags &= ~VC_CONTAINER_PACKET_FLAG_FRAME_END; |
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|
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return track_module->io->status; |
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} |
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|
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/*****************************************************************************/ |
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static VC_CONTAINER_STATUS_T simple_reader_seek( VC_CONTAINER_T *ctx, int64_t *offset, |
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VC_CONTAINER_SEEK_MODE_T mode, VC_CONTAINER_SEEK_FLAGS_T flags) |
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{ |
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VC_CONTAINER_PARAM_UNUSED(ctx); |
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VC_CONTAINER_PARAM_UNUSED(offset); |
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VC_CONTAINER_PARAM_UNUSED(mode); |
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VC_CONTAINER_PARAM_UNUSED(flags); |
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return VC_CONTAINER_ERROR_UNSUPPORTED_OPERATION; |
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} |
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|
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/*****************************************************************************/ |
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static VC_CONTAINER_STATUS_T simple_reader_close( VC_CONTAINER_T *ctx ) |
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{ |
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VC_CONTAINER_MODULE_T *module = ctx->priv->module; |
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|
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for (; ctx->tracks_num > 0; ctx->tracks_num--) |
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{ |
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VC_CONTAINER_TRACK_T *track = ctx->tracks[ctx->tracks_num-1]; |
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if (track->priv->module->io) |
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vc_container_io_close(track->priv->module->io); |
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vc_container_free_track(ctx, track); |
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} |
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|
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free(module); |
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return VC_CONTAINER_SUCCESS; |
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} |
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|
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/*****************************************************************************/ |
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VC_CONTAINER_STATUS_T simple_reader_open( VC_CONTAINER_T *ctx ) |
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{ |
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VC_CONTAINER_MODULE_T *module = 0; |
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VC_CONTAINER_STATUS_T status = VC_CONTAINER_ERROR_FORMAT_INVALID; |
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uint8_t h[sizeof(SIGNATURE_STRING)]; |
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unsigned int i; |
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|
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/* Check for the signature */ |
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if (PEEK_BYTES(ctx, h, sizeof(h)) != sizeof(h) || |
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memcmp(h, SIGNATURE_STRING, sizeof(SIGNATURE_STRING)-1)) |
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return VC_CONTAINER_ERROR_FORMAT_NOT_SUPPORTED; |
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|
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LOG_DEBUG(ctx, "using simple reader"); |
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|
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/* Allocate our context */ |
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module = malloc(sizeof(*module)); |
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if (!module) return VC_CONTAINER_ERROR_OUT_OF_MEMORY; |
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memset(module, 0, sizeof(*module)); |
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ctx->priv->module = module; |
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ctx->tracks = module->tracks; |
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|
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status = simple_read_header(ctx); |
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if (status != VC_CONTAINER_SUCCESS) |
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goto error; |
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|
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/* Open all the elementary streams */ |
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for (i = 0; i < ctx->tracks_num; i++) |
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{ |
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VC_CONTAINER_TRACK_T *track = ctx->tracks[i]; |
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char *uri; |
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|
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track->priv->module->io = vc_container_io_open(track->priv->module->uri, |
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VC_CONTAINER_IO_MODE_READ, &status); |
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|
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/* URI might be relative to the path of the metadata file so |
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* try again with that new path */ |
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if (!track->priv->module->io && |
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(uri = malloc(strlen(ctx->priv->io->uri) + |
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strlen(track->priv->module->uri) + 1)) != NULL) |
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{ |
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char *end; |
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|
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strcpy(uri, ctx->priv->io->uri); |
|
|
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/* Find the last directory separator */ |
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for (end = uri + strlen(ctx->priv->io->uri) + 1; end != uri; end--) |
|
if (*(end-1) == '/' || *(end-1) == '\\') |
|
break; |
|
strcpy(end, track->priv->module->uri); |
|
|
|
track->priv->module->io = vc_container_io_open(uri, |
|
VC_CONTAINER_IO_MODE_READ, &status); |
|
if (!track->priv->module->io) |
|
LOG_ERROR(ctx, "could not open elementary stream: %s", uri); |
|
free(uri); |
|
} |
|
if (!track->priv->module->io) |
|
{ |
|
LOG_ERROR(ctx, "could not open elementary stream: %s", |
|
track->priv->module->uri); |
|
goto error; |
|
} |
|
} |
|
|
|
/* |
|
* We now have all the information we really need to start playing the stream |
|
*/ |
|
|
|
module->metadata_offset = STREAM_POSITION(ctx); |
|
|
|
/* Initialise state for all tracks */ |
|
module->state.metadata_offset = module->metadata_offset; |
|
for (i = 0; i < ctx->tracks_num; i++) |
|
{ |
|
VC_CONTAINER_TRACK_T *track = ctx->tracks[i]; |
|
track->priv->module->state = &module->state; |
|
} |
|
|
|
/* Look for the codec configuration data for each track so |
|
* we can store it in the track format */ |
|
for (i = 0; i < ctx->tracks_num; i++) |
|
{ |
|
VC_CONTAINER_TRACK_T *track = ctx->tracks[i]; |
|
VC_CONTAINER_PACKET_T packet; |
|
packet.track = i; |
|
status = VC_CONTAINER_ERROR_CONTINUE; |
|
|
|
while (status == VC_CONTAINER_ERROR_CONTINUE) |
|
status = simple_reader_read(ctx, &packet, |
|
VC_CONTAINER_READ_FLAG_INFO | VC_CONTAINER_READ_FLAG_FORCE_TRACK); |
|
if (status != VC_CONTAINER_SUCCESS) |
|
continue; |
|
|
|
status = vc_container_track_allocate_extradata(ctx, track, packet.size); |
|
if (status != VC_CONTAINER_SUCCESS) |
|
continue; |
|
|
|
packet.data = track->format->extradata; |
|
packet.buffer_size = packet.size; |
|
packet.size = 0; |
|
status = simple_reader_read(ctx, &packet, |
|
VC_CONTAINER_READ_FLAG_FORCE_TRACK); |
|
if (status != VC_CONTAINER_SUCCESS) |
|
continue; |
|
|
|
track->format->extradata_size = packet.size; |
|
} |
|
|
|
ctx->priv->pf_close = simple_reader_close; |
|
ctx->priv->pf_read = simple_reader_read; |
|
ctx->priv->pf_seek = simple_reader_seek; |
|
return VC_CONTAINER_SUCCESS; |
|
|
|
error: |
|
LOG_ERROR(ctx, "simple: error opening stream (%i)", status); |
|
simple_reader_close(ctx); |
|
return status; |
|
} |
|
|
|
/******************************************************************************** |
|
Entrypoint function |
|
********************************************************************************/ |
|
|
|
#if !defined(ENABLE_CONTAINERS_STANDALONE) && defined(__HIGHC__) |
|
# pragma weak reader_open simple_reader_open |
|
#endif
|
|
|